sideline
All a b c d e f g h i j k l m n o p q r s t u v w x y z
All CEFR A1 A2 B1 B2 C1 C2
Content locale
EN 英語 BN ベンガル語 HI ヒンディー語 ES スペイン語 FR フランス語 DE ドイツ語 RU ロシア語 ZH 中国語 JA 日本語
All Vocabulary Cards All Vocabularies
B2 noun /ˈsaɪd.laɪn/

sideline

副業
Meaning
An activity done in addition to one's main job or area of work.
Example
The sideline discussions led to mutual understanding.
副業の議論が相互理解を促進した。
B2 noun /slæŋ/

Slang

スラング; 不正な言葉
Meaning
very informal language that is usually spoken rather than written
Example
The teenagers used slang that their parents couldn't understand.
ティーンエイジャーは親が理解できないスラングを使いました。
B2 verb /snæp/

snap

折れる
Meaning
to break suddenly; to speak angrily; to take a photograph quickly
Example
The rope snapped under the weight.
ロープは重さで折れました。
B2 verb /ˈspɛsɪfaɪ/

specify

指定する
Meaning
to state or describe something clearly and exactly
Example
Please specify the time and place of the meeting.
会議の時間と場所を指定してください。
B2 adjective ˈstrʌktʃərd

structured

構造化
Meaning
Having a clear organization or framework; systematically arranged.
Example
A structured execution plan is crucial for success.
構造化された実行計画は成功にとって重要です。
B2 noun /ˈsɪmptəm/

symptom

症状
Meaning
a sign or indication of something, especially of an illness
Example
Fever is a common symptom of the flu.
熱はインフルエンザの一般的な症状です。
B2 noun ˌsensɪˈtɪvɪti

sensitivity

感受性
Meaning
The quality or condition of being sensitive; responsiveness to stimuli.
Example
Bose proved plant sensitivity through experiments.
ボースは実験を通じて植物の感受性を証明しました。
B2 adjective səˈsteɪ.nə.bəl

sustainable

持続可能な
Meaning
Able to be maintained at a certain rate or level; conserving an ecological balance.
Example
Sustainable practices mitigate environmental impact.
持続可能な実践は環境への影響を軽減します。
B2 verb /stæk/

stack

Meaning
to arrange things in a neat pile or one on top of another
Example
He stacked the books neatly on the shelf.
B2 adjective /ˈsɛksi/

sexy

セクシー
Meaning
sexually attractive or exciting
Example
She wore a sexy red dress to the party.
彼女はパーティーでセクシーな赤いドレスを着ていました。
B2 noun /səˈraʊn.dɪŋz/

surroundings

周囲
Meaning
The area around a person, place, or thing.
Example
She quickly adapted to her new surroundings.
彼女は新しい環境にすぐに適応しました。
B2 verb /slæp/

slap

ビンタ
Meaning
to hit someone quickly with the flat part of the hand; to strike sharply
Example
She was so angry that she slapped him across the face.
彼女は怒りすぎて顔にビンタをした。
B2 verb /səˈspɛnd/

suspend

一時停止する
Meaning
To temporarily stop something from being active or valid.
Example
The company decided to suspend his membership.
その会社は彼の会員資格をサスペンドすることに決めました。
B2 verb /sæk/

sack

解雇する
Meaning
to dismiss from a job; to put something in a sack
Example
The company sacked him for poor performance.
会社は業績不良で彼を解雇しました。
B2 noun /səˈspɪʃən/

Suspicion

疑い
Meaning
a feeling or thought that someone is guilty of an illegal or dishonest activity
Example
The police arrested him on suspicion of theft.
警察は窃盗の疑いで彼を逮捕しました。
B2 noun /stɑːr fɪʃ/

Star fish

ヒトデ
Meaning
a marine echinoderm with five or more radiating arms, typically found on the sea floor
Example
The starfish slowly moved across the ocean floor searching for food.
ヒトデはゆっくりと海底を動きながら食べ物を探した。
B2 noun /ˈsɛktər/

sector

セクター
Meaning
a distinct part or area of an economy, society, or industry
Example
The technology sector is growing rapidly.
テクノロジーセクターは急速に成長しています。
B2 noun, verb /striːk/

streak

線または筋; 指定された方向に非常に速く移動する
Meaning
a long, thin line or mark; to move very quickly in a specified direction
Example
Lightning streaked across the night sky.
稲妻が夜空を横切った。
B2 adjective /ˈsɪk.li/

Sickly

弱い; 病気; 青白い
Meaning
weak and unhealthy; prone to illness; appearing weak or pale
Example
The sickly child needed extra care and attention.
その弱い子供は、特別なケアと注意が必要だった。
B2 verb /soʊ/

sow

まく
Meaning
to plant seeds in the ground; to scatter seeds for growing
Example
The farmer will sow wheat seeds in the field tomorrow.
農家は明日、畑に小麦の種をまきます。
B2 verb /stʌn/

stun

驚かす, 気絶させる
Meaning
to shock or surprise someone greatly; to knock someone unconscious or dazed
Example
The news of her sudden resignation stunned everyone.
彼女の突然の辞任のニュースは皆を驚かせた。
B2 noun /ˈsɒlɪtjuːd/

solitude

孤独
Meaning
The state or situation of being alone.
Example
Solitude can provide the opportunity for deep reflection.
孤独は深い反省の機会を提供することができます。
B2 noun /ˈsɜr.neɪm/

Surname

苗字
Meaning
a hereditary name common to all members of a family; family name
Example
Please write your first name and surname on the form.
フォームに名前と苗字を書いてください。
B2 adjective /ʃɪər/

Sheer

完全な; 絶対的な; 透明な; 非常に急な
Meaning
complete; absolute; transparent; very steep
Example
It was sheer luck that we found the place.
それは私たちが場所を見つけた純粋な運だった。
B2 noun /ˌsɪm.ɪˈlær.ə.ti/

Similarity

類似性; 相似性
Meaning
the quality or state of being similar; resemblance
Example
There is a striking similarity between the two paintings.
その2つの絵の間には驚くべき類似性があります。
B2 noun /sɜːˈveɪ.ləns/

surveillance

監視
Meaning
Close observation, especially of a suspected spy or criminal; continuous watching of a place, person, or situation.
Example
Government agencies conduct surveillance on cyber threats.
政府機関はサイバー脅威の監視を行っています。
B2 verb /stɜːr/

stir

かき混ぜる
Meaning
to mix or move something in a circular motion, especially in liquid
Example
She stirred the soup to make sure it didn't burn.
彼女はスープをかき混ぜて、焦げないようにした。
B2 adjective /ˈstuː.di.əs/

Studious

勉強熱心; 学問に没頭
Meaning
characterized by diligent study; devoted to learning
Example
She is a studious student who spends hours in the library.
彼女は図書館で何時間も過ごす勉強熱心な学生です。
B2 verb /ˈstɑːrtl/

startle

驚かせる
Meaning
To surprise or frighten someone suddenly.
Example
The loud noise startled the children.
大きな音が子供たちを驚かせた。
B2 noun /ˈsoʊlər ɪˈklɪps/

Solar eclipse

日食
Meaning
an eclipse in which the sun is obscured by the moon passing between it and the earth
Example
The solar eclipse will be visible from our city next month.
来月、私たちの街から日食が見ることができます。
B2 noun /ˈskʌlp.tər/

Sculptor

彫刻家
Meaning
an artist who creates sculptures by carving, modeling, or shaping materials
Example
The sculptor spent months creating a beautiful marble statue.
彫刻家は美しい大理石の彫像を作るのに数ヶ月を費やしました。
B2 adjective /səˈbɜːrbən/

suburban

郊外の
Meaning
relating to or characteristic of a suburb or the people living there
Example
They bought a house in a quiet suburban area.
彼らは静かな郊外の地域に家を買いました。
B2 noun /slʌm/

Slum

スラム街
Meaning
a poor urban area with substandard housing and squalid conditions
Example
The government is working to improve conditions in the slum.
政府はスラムの条件を改善するために取り組んでいます。
B2 adverb /ˈsmuːð.li/

Smoothly

スムーズに; 問題なく
Meaning
without problems or difficulties; in an even and regular way
Example
The car runs smoothly on the new highway.
車は新しい高速道路でスムーズに走る。
B2 verb /ˈʃʌfəl/

shuffle

Meaning
to walk by dragging one's feet along or without lifting them fully; to mix or rearrange
Example
He shuffled the cards before dealing them.
B2 noun /stɑːˈveɪ.ʃən/

Starvation

飢餓
Meaning
suffering or death caused by lack of food; extreme hunger
Example
Many people died of starvation during the famine.
多くの人々は飢饉の間に飢え死にしました。
B2 verb, noun /stæb/

stab

刺す
Meaning
to pierce or wound with a pointed weapon or object
Example
He was stabbed in the back during the altercation.
彼は口論中に背中を刺されました。
B2 adjective /senˈseɪʃənəl/

Sensational

センセーショナル; 印象的; 驚異的
Meaning
causing great excitement or shock; extremely impressive
Example
The sensational performance left the audience speechless.
そのセンセーショナルなパフォーマンスは観客を言葉を失わせました。
B2 adverb /ˈsʌbsɪkwəntli/

subsequently

その後
Meaning
at a later time; afterward
Example
He failed his exam and subsequently had to retake it.
彼は試験に失敗し、その後再試験を受けなければならなかった。
B2 verb /ˈsɒfən/

soften

柔らかくする
Meaning
to make or become less hard, severe, or strong.
Example
Heat will soften the butter quickly.
熱はバターをすぐに柔らかくします。
B2 adjective /ˈsoʊ.vi.ət/

soviet

ソビエト
Meaning
relating to the Soviet Union or its government
Example
The Soviet era saw significant changes in Eastern Europe.
ソビエト時代には東ヨーロッパで重要な変化がありました。
B2 adjective /skeərs/

Scarce

希少な; 見つけにくい; 少量で存在する
Meaning
rare; not easily found; existing in small quantities
Example
Fresh water is becoming increasingly scarce in desert regions.
砂漠地帯では、淡水がますます希少になっています。
B2 verb /ˈspɛʃəˌlaɪz/

specialize

専門的に取り組む
Meaning
to focus on a particular subject or activity and become an expert in it
Example
He decided to specialize in cardiology.
彼は心臓病学に専門的に取り組むことに決めました。
B2 noun /spekˈteɪtər/

Spectator

観客
Meaning
a person who watches at a show, game, or other event; an observer
Example
The stadium was filled with excited spectators.
スタジアムは興奮した観客でいっぱいでした。
B2 noun səˌsteɪ.nəˈbɪl.ɪ.ti

sustainability

持続可能性
Meaning
The ability to be maintained at a certain rate or level; the avoidance of the depletion of natural resources in order to maintain ecological balance.
Example
Sustainability ensures long-term environmental health.
持続可能性は長期的な環境健康を保証します。
B2 noun /səˈplaɪə(r)/

supplier

供給者
Meaning
a person or company that provides goods or services
Example
The supplier delivered the products on time.
供給者は時間通りに商品を納品しました。
B2 noun /ˈsɪmpəθi/

Sympathy

同情
Meaning
feelings of pity and sorrow for someone else's misfortune
Example
She expressed her sympathy for the victims of the accident.
彼女は事故の被害者に対して同情を表明した。
B2 adjective /ˈspɒtɪd/

Spotted

斑点のある; 見られた; マークされた
Meaning
having spots or marks; noticed or seen
Example
The spotted leopard moved silently through the jungle.
斑点のあるヒョウはジャングルを静かに歩いた。
B2 verb /səʊ/

sew

幸せ
Meaning
to join pieces of fabric or material together using a needle and thread
Example
She learned to sew her own clothes at an early age.
彼女は賞を受け取ったとき、自分の幸せを隠すことができませんでした。
B2 adjective /slæk/

slack

緩い
Meaning
not tight, firm, or busy; lacking tension or activity
Example
Business is slack during the rainy season.
雨季の間、ビジネスは鈍くなる。
B2 verb /ˈstrʌɡlɪŋ/

struggling

格闘する
Meaning
Making forceful or violent efforts to get free of restraint or constriction; having difficulty achieving something.
Example
Many regions are struggling with economic recovery.
多くの地域が経済回復に苦しんでいます。
B2 noun /soʊp keɪs/

Soap case

石鹸ケース
Meaning
a container used to store soap
Example
She bought a beautiful soap case for the bathroom.
彼女はバスルーム用に美しい石鹸ケースを買いました。
B2 noun /ˈsɛsəmi sidz/

Sesame Seeds

ゴマの種
Meaning
small edible seeds from the sesame plant used in cooking and baking
Example
Sprinkle sesame seeds on top of the bread before baking.
パンの上にゴマの種を振りかけてから焼いてください。
B2 adjective /ˈskeptɪkəl/

Sceptical

懐疑的な; 疑わしい; 何かの真実に疑問を抱く
Meaning
having doubts; not easily convinced; questioning the truth of something
Example
Many scientists remain sceptical about the new theory.
多くの科学者が新しい理論に対して懐疑的な立場を取っている。
B2 noun /ˈsteɪdiəm/

stadium

Meaning
a large structure with seating for sports, concerts, or other events
Example
Thousands of fans filled the stadium to watch the final match.
B2 noun /sɪnˈserɪti/

Sincerity

誠実さ
Meaning
the quality of being free from pretense or deceit; honesty
Example
His sincerity in apologizing was evident to everyone.
彼の謝罪の真摯さは、すべての人に明らかだった。
B2 noun /ˈstɑːrt.ʌp/

startup

スタートアップ企業
Meaning
A newly established business, especially a small technology or business company that is just beginning operations.
Example
The startup secured funding from investors.
そのスタートアップは投資家から資金調達を受けました。
B2 noun /ˌsuːpərɪnˈtɛndənt/

superintendent

監督者
Meaning
a person who oversees, manages, or directs an organization, building, or project
Example
The superintendent visited the classrooms to check on progress.
監督者は進捗を確認するために教室を訪れました。
B2 noun /ˈsəʊ.ʃəl.ɪ.zəm/

socialism

社会主義
Meaning
An economic system where the means of production are owned by the state or community.
Example
In socialism, resources are distributed equally among citizens.
社会主義では、資源が市民間で平等に分配されます。
B2 noun /sɛnˈseɪʃən/

Sensation

感覚 / センセーション
Meaning
a physical feeling or perception resulting from something that happens to or comes into contact with the body; a widespread reaction of interest and excitement
Example
The new singer became an overnight sensation.
新しい歌手は一夜にしてセンセーションとなった。
B2 noun/verb /stʌmp/

stump

木の切り株、困惑させる
Meaning
the base of a tree left after the trunk is cut down; to puzzle or confuse
Example
The question completely stumped the students.
その質問は学生たちを完全に困らせました。
B2 noun /səkˈses.ər/

Successor

後継者
Meaning
a person who succeeds another in office; someone who takes over a position or role
Example
The CEO announced his retirement and named his successor for the company.
CEOは退職を発表し、会社の後継者を指名しました。
B2 noun ˈstræt.ɪ.dʒiz

strategies

戦略
Meaning
A plan of action designed to achieve a long-term or overall aim; the art of planning and directing operations.
Example
Effective strategies can mitigate climate change impacts.
効果的な戦略は気候変動の影響を軽減することができます。
B2 noun /strɔː/

straw

ストローまたは茎
Meaning
a thin tube for sucking up liquids; dried stalks of grain plants
Example
She drank the juice through a straw.
彼女はストローでジュースを飲んだ。
B2 noun /ˌsuːvəˈnɪər/

Souvenir

お土産
Meaning
a thing that is kept as a reminder of a person, place, or event; a memento
Example
I bought a small souvenir from the gift shop.
私はギフトショップで小さな土産を買いました。
B2 adjective /ˈspaɪ.rəl/

Spiral

螺旋
Meaning
winding in a continuous curve; helical
Example
The spiral staircase led to the top floor.
螺旋階段は最上階に通じていました。
B2 noun /səbˈmɪʃən/

submission

提出, 服従
Meaning
the act of yielding to authority or presenting something for consideration
Example
Her submission of the report was appreciated by the manager.
彼女の報告書の提出は、マネージャーに評価されました。
B2 adjective /suːˈpriːm/

Supreme

最高の
Meaning
highest in rank, authority, or quality; greatest; most important
Example
The Supreme Court made the final decision.
最高裁判所は最終的な決定を下しました。
B2 noun /ˈsɪɡ.nəlz/

signals

信号
Meaning
A gesture, action, or sound conveying information or instructions.
Example
Signals from deep space were detected last week.
深宇宙からの信号は先週検出されました。
B2 noun /ˈsuː.ɪ.saɪd/

Suicide

自殺
Meaning
the act of intentionally killing oneself
Example
Mental health professionals work to prevent suicide.
メンタルヘルスの専門家は自殺を防ぐために働いています。
B2 noun /speɪd/

Spade

シャベル
Meaning
a tool with a flat blade for digging; a playing card suit
Example
The gardener used a spade to dig holes for planting flowers.
庭師は花を植えるために穴を掘るためにシャベルを使いました。
B2 noun/verb /ˈsæd.əl/

saddle

馬の鞍; 誰かに責任を負わせる
Meaning
A seat fastened on the back of a horse for riding; to burden someone with a responsibility.
Example
He saddled the horse before going for a ride.
彼は乗馬の前に馬にサドルをつけた。
B2 noun /spaɪs/

spice

スパイス
Meaning
a substance used to add flavor to food
Example
She added a pinch of spice to the curry for extra flavor.
彼女はカレーに風味を加えるためにスパイスを一つまみ加えました。
B2 verb /siːz/

seize

奪う
Meaning
To take hold of suddenly and forcibly.
Example
The police managed to seize the stolen goods.
警察は盗まれた商品を押収することに成功した。
B2 adjective /ˈsoʊlər/

solar

太陽の
Meaning
Relating to or determined by the sun
Example
The house is powered by solar energy.
この家は太陽エネルギーで動いています。
B2 noun /ˌsɛlf əˈwɛə.nəs/

self-awareness

自己認識
Meaning
Conscious knowledge of one's own character, feelings, motives, and desires.
Example
Self-awareness helps in understanding one's emotions and actions.
自己認識は、自己の感情や行動を理解するのに役立ちます。
B2 verb /spɪt/

spit

唾を吐く
Meaning
to force liquid, especially saliva, out of the mouth
Example
He spat on the ground in anger.
彼は怒りで地面に唾を吐いた。
B2 verb /səˈsteɪn/

sustain

維持する
Meaning
To support, maintain, or keep something going over time.
Example
The team worked hard to sustain their success.
チームは彼らの成功を維持するために一生懸命働きました。
B2 noun/verb /ˈsɜːveɪ/

survey

調査, アンケート
Meaning
noun: an examination or inspection; verb: to examine or measure (an area or subject)
Example
They conducted a survey to understand customer preferences.
彼らは顧客の好みを理解するために調査を行いました。
B2 noun /ˈsɪnˌdroʊm/

syndrome

症候群
Meaning
a group of symptoms that occur together and characterize a condition or disease
Example
Down syndrome affects a person's physical and mental development.
ダウン症は、個人の身体的および精神的な発達に影響を与えます。
B2 adjective /ˈspɛʃəˌlaɪzd/

specialized

専門的な
Meaning
designed or developed for a particular purpose or function
Example
He has a specialized knowledge of ancient civilizations.
彼は古代文明に関する専門的な知識を持っています。
B2 noun /ˈset.əl.mənt/

Settlement

定住; 合意
Meaning
a place where people establish a community; an agreement that ends a dispute
Example
The early settlement was built near the river for easy access to water.
初期の定住地は川の近くに建設され、水を簡単に取り入れるようにされていました。
B2 adjective /ˈslɒp.i/

Sloppy

だらしない; 汚い; 注意を払わずに行われた
Meaning
careless; messy; done without care or attention to detail
Example
His sloppy handwriting was difficult to read.
彼の乱雑な手書きは読みにくかった。
B2 noun /ˈsɑːfmɔːr/

sophomore

二年生
Meaning
a student in their second year of study at a university or high school
Example
He’s a sophomore in college, studying computer science.
彼は大学で2年生で、コンピュータサイエンスを勉強しています。
B2 noun /ˈsɪblɪŋ/

sibling

兄弟姉妹
Meaning
A brother or sister.
Example
She has three siblings, two brothers and one sister.
彼女は三人の兄弟姉妹がいます。二人の兄と一人の妹。
B2 adjective sɪnˈθet̬.ɪk

synthetic

合成の
Meaning
Made by chemical synthesis, especially to imitate a natural product; artificial.
Example
Synthetic chemicals are used in processed foods.
合成化学物質は加工食品に使用されます。
B2 noun /ˈspɒt.laɪt/

spotlight

Meaning
a strong beam of light directed onto a particular area; figuratively, public attention
Example
The singer stood proudly in the spotlight.
B2 verb /swel/

swell

腫れる
Meaning
to become larger, rounder, or thicker; to increase in size
Example
Her ankle began to swell after the injury.
彼女の足首は怪我の後、腫れ始めました。
B2 adjective /ˈseɪ.krɪd/

Sacred

神聖な
Meaning
connected with God or a god; considered holy; worthy of religious worship
Example
The sacred temple was visited by thousands of pilgrims.
Thousands of pilgrims visited that sacred temple.
B2 noun /ˈsɛm.iˌsɜːr.kəl/

semicircle

半円
Meaning
Half of a circle or something shaped like half of a circle.
Example
The students sat in a semicircle around the teacher.
学生たちは教師の周りに半円形に座っていました。
B2 adverb /sɪˈvɪərli/

severely

ひどく
Meaning
to a great degree; very seriously or harshly
Example
The patient was severely injured in the accident.
患者は事故でひどく負傷しました。
B2 noun /ˌsɛkʃuˈæləti/

sexuality

セクシュアリティ
Meaning
a person's capacity for sexual feelings and orientation
Example
She spoke openly about her sexuality and identity.
彼女は自分のセクシュアリティとアイデンティティについてオープンに話しました。
B2 noun, verb /slænt/

slant

偏った見解
Meaning
A particular point of view; to slope or lean in a particular direction.
Example
The article had a political slant.
その記事には政治的な傾向がありました。
B2 noun /ˈskuːtər/

scooter

スクーター
Meaning
a small two-wheeled vehicle powered by an engine or electricity
Example
She rides a scooter to work every day.
彼女は毎日スクーターで仕事に行きます。
B2 adjective /ˈskætərd/

Scattered

散らばった; 散在する;
Meaning
spread widely apart; dispersed; occurring here and there
Example
Scattered showers are expected throughout the day.
1日中、散らばったシャワーが予想されています。
B2 adverb /ˈstɛdɪli/

steadily

着実に
Meaning
in a regular and continuous way; without stopping or changing
Example
The company's profits have been increasing steadily.
会社の利益は着実に増加しています。
B2 noun /streɪn/

Strain

緊張; 圧力; 疲労;
Meaning
pressure or tension; excessive demand on strength or resources
Example
Working long hours put a strain on his health.
長時間働くことは彼の健康に圧力をかけました。
B2 noun /sneɪl/

Snail

カタツムリ
Meaning
a small soft creature with a shell on its back that moves very slowly
Example
The snail left a shiny trail as it crawled across the leaf.
カタツムリは葉っぱを這っている間に輝く跡を残しました。
B2 adjective /saʊər/

Sour

酸っぱい
Meaning
having an acid taste like lemon or vinegar; unpleasant or disagreeable
Example
The milk has gone sour and smells terrible.
牛乳は酸っぱくなり、ひどい匂いがします。
B2 noun /swɪŋ/

Swing

ブランコ
Meaning
move or cause to move back and forth or from side to side while suspended or on an axis
Example
The children love to swing in the park.
子供たちは公園でブランコをするのが好きです。
B2 noun /ˈskɒlərʃɪp/

scholarship

奨学金
Meaning
an award or grant to support a student's education
Example
She received a scholarship to study abroad.
彼女は留学するための奨学金を受け取りました。
B2 verb /səbˈmɪt/

submit

提出する
Meaning
to present for consideration; to surrender; to yield
Example
Please submit your assignment by Friday.
金曜日までに課題を提出してください。
B2 adverb /ˈskɪl.fəl.i/

Skilfully/US: Skillfully

巧みに
Meaning
in a way that shows ability and training; expertly
Example
She skilfully painted the portrait in just two hours.
彼女は二時間で巧みに肖像を描いた。
B2 verb /səˈluːt/

salute

敬礼
Meaning
to greet with respect; to honor
Example
The soldiers saluted their commanding officer.
兵士たちは指揮官に敬礼した。
B2 adverb /səbˈstænʃəli/

substantially

大幅に
Meaning
to a great extent or degree
Example
The new policy has substantially improved working conditions.
新しい政策は労働条件を大幅に改善しました。
B2 noun /ˈstæm.ɪ.nə/

Stamina

持久力
Meaning
the ability to sustain prolonged physical or mental effort
Example
Marathon runners need great stamina to complete the race.
マラソンランナーはレースを完走するために素晴らしいスタミナが必要です。
B2 noun, verb /sɪn/

sin

罪
Meaning
an immoral act considered to be a transgression against divine law; to commit an offense against religious or moral law
Example
He confessed his sin to the priest.
彼は神父に自分の罪を告白しました。
B2 noun ˌsɛlf.kənˈtrəʊl

self-control

自己制御
Meaning
The ability to control one's emotions, behavior, and desires in order to obtain some reward, or avoid some punishment, typically in the longer term.
Example
Self-control is important for maintaining a balanced life.
自己制御はバランスの取れた生活を維持するために重要です。
B2 adjective /ˈstʌdid/

studied

慎重な
Meaning
carefully considered, deliberate, or planned
Example
Her response was calm and studied, not impulsive.
彼女の返答は冷静で慎重であり、衝動的ではなかった。
B2 verb /ʃrɪŋk/

shrink

縮む
Meaning
to become smaller in size; to draw back in fear
Example
The sweater shrank after washing in hot water.
セーターは熱い水で洗った後、縮んだ。
B2 noun /ˈsæksəfoʊn/

Saxophone

サクソフォン
Meaning
a wind musical instrument with a curved metal body and a single reed mouthpiece
Example
The jazz musician played a beautiful solo on his saxophone.
ジャズのミュージシャンは自分のサクソフォンで美しいソロを演奏しました。
B2 adjective /ˈsoʊbər/

Sober

冷静な; 真剣で思慮深い; 節度のある
Meaning
not affected by alcohol; serious and thoughtful; moderate
Example
He remained sober throughout the celebration.
彼は祝典全体を通して冷静を保っていた。
B2 adjective /ˈsɪnɪstər/

sinister

不吉な
Meaning
Giving the impression that something harmful or evil is happening or will happen.
Example
The abandoned house had a sinister atmosphere.
その廃屋には不吉な雰囲気が漂っていた。
B2 adverb /ˈskeəs.li/

Scarcely

ほとんど; ほとんどない; わずかに
Meaning
hardly; barely; only just
Example
I could scarcely believe my eyes.
私は自分の目をほとんど信じられなかった。
B2 noun /ˌsoʊsiˈɑːlədʒi/

sociology

社会学
Meaning
the study of society, human relationships, and social institutions
Example
She is studying sociology at university.
彼女は大学で社会学を学んでいます。
B2 adjective /sə'spɪʃ.əs/

Suspicious

疑わしい; 不審な
Meaning
having or showing distrust; doubtful; questionable
Example
The police found his behavior very suspicious.
警察は彼の行動が非常に疑わしいと感じました。
B2 noun /səkˈsɛʃ.ən/

succession

生態遷移
Meaning
The process of ecological change in which one community of organisms is gradually replaced by another.
Example
Forest succession occurs when old ecosystems are replaced by new ones.
森林の遷移は、古い生態系が新しい生態系に置き換えられるときに発生します。
B2 adverb /ˈsel.fɪʃ.li/

Selfishly

利己的に
Meaning
in a selfish manner; caring only about oneself
Example
He selfishly took all the cookies.
彼は自己中心的にすべてのクッキーを取った。
B2 noun /ˈsuːpəvaɪzə(r)/

supervisor

監督者
Meaning
a person who manages or directs the work of others
Example
The supervisor checked the progress of each employee.
スーパーバイザーは各従業員の進捗を確認しました。
B2 adverb /ˈstrɪktli/

strictly

厳密に
Meaning
in a way that follows rules or limits completely
Example
Smoking is strictly prohibited inside the building.
建物内での喫煙は厳密に禁止されています。
B2 noun sɔɪl ɪˈrəʊʒən

soil erosion

土壌侵食
Meaning
The wearing away of topsoil by water, wind, or other natural forces.
Example
Soil erosion can lead to the loss of fertile land.
土壌侵食は肥沃な土地の喪失につながる可能性があります。