B1 noun /ˌdɛmənˈstreɪʃən/

demonstration

デモ, 示威

Meaning

the act of showing something clearly, or a public protest

Example

The workers organized a demonstration for better wages.

労働者たちはより良い賃金のためにデモを組織した。

B1 noun /ˈdɪstrɪkt/

district

地区

Meaning

a specific area of a country, city, or town, often with official boundaries

Example

She lives in the northern district of the city.

彼女は街の北地区に住んでいます。

B1 noun ˈdɪdʒ.ɪ.təl tuːlz

digital tools

デジタルツール

Meaning

Electronic software and applications used for learning and educational purposes.

Example

Schools are integrating digital tools to enhance learning.

学校は学習を強化するためにデジタルツールを統合しています。

B1 noun /ˈdaɪ.mənd/

Diamond

ダイヤモンド

Meaning

a precious stone that is extremely hard and brilliant when cut

Example

She wore a diamond ring on her finger.

彼女は指にはダイヤモンドの指輪を着けていた。

B1 noun /dɪˈbeɪts/

debates

討論

Meaning

Formal discussions where different viewpoints are presented and argued.

Example

Debates on governance lasted throughout the session.

ガバナンスに関する討論はセッション全体を通して行われました。

B1 adjective /dʌl/

Dull

退屈な; つまらない; 無気力な; 愚かな;

Meaning

lacking interest or excitement; not bright; lacking intelligence; tedious

Example

The lecture was very dull and boring.

その講義はとても退屈で退屈でした。

B1 adjective /dɪsˈɡʌstɪŋ/

disgusting

嫌な

Meaning

extremely unpleasant or offensive; causing strong dislike or revulsion

Example

The smell coming from the trash can was absolutely disgusting.

ゴミ箱からの臭いは完全に嫌なものでした。

B1 adjective dəˈmes.tɪk

domestic

国内の

Meaning

Existing or occurring inside a particular country; not foreign or international.

Example

Domestic investments stabilize the economy.

国内投資は経済を安定させる。

B1 noun ˈdɪsɪplɪn

discipline

規律

Meaning

The practice of training people to obey rules or a code of behavior, using punishment to correct disobedience

Example

Discipline helps maintain focus and productivity.

規律は集中力と生産性を維持するのに役立ちます。

B1 noun, verb /ˈdɪskaʊnt/

discount

割引

Meaning

A reduction in the usual price of something; to reduce the price of something.

Example

The store offered a 20% discount on all electronics.

その店はすべての電子製品に20%の割引を提供しました。

B1 verb /dɪˈfɛnd/

defend

守る

Meaning

To protect someone or something from harm or attack.

Example

The lawyer worked hard to defend her client.

弁護士は彼女のクライアントを守るために一生懸命働きました。

B1 verb /dɪˈzɜːrv/

deserve

値する

Meaning

To be worthy of something, usually a reward or punishment.

Example

She worked hard and deserves recognition.

彼女は一生懸命働き、認められる価値がある。

B1 verb /ˈdekəreɪt/

decorate

飾る

Meaning

to make something look more attractive by adding ornaments

Example

We will decorate the room for the party.

パーティーのために部屋を飾ります。

B1 noun /dɪˈzɜːrts/ (noun: reward or punishment deserved)

deserts

誰かが得るべきもの、特に罰や報酬

Meaning

what someone deserves, especially punishment or reward

Example

He finally got his just deserts for cheating in the exam.

彼は試験でカンニングをして、ついに自分の正当な報いを受けました。

B1 adjective /drʌŋk/

drunk

酔っ払った

Meaning

affected by alcohol to the point of losing control of one's faculties or behavior

Example

He was too drunk to walk straight.

彼は酔っ払って、まっすぐ歩けなかった。

B1 noun /dɒt/

dot

点

Meaning

a small round mark or spot

Example

She drew a red dot on the paper.

彼女は紙に赤い点を描きました。

B1 noun /dɪˈsɪʒənˌmeɪkɪŋ/

decision-making

意思決定

Meaning

the process of making decisions, especially important or business-related decisions

Example

The CEO's decision-making was crucial for the success of the company.

CEOの意思決定は、会社の成功にとって重要でした。

B1 adjective /ˈdiː.teɪld/

detailed

詳細

Meaning

Having many details; very thorough.

Example

The report provided a detailed analysis of the situation.

報告書は状況の詳細な分析を提供しました。

B1 noun, verb /dɪˈzaɪər/

desire

欲望

Meaning

a strong feeling of wanting something or wishing for something to happen

Example

He has a strong desire to travel the world.

彼は世界を旅行したいという強い欲望を持っています。

B1 adjective /dɪsˈɒnəst/

Dishonest

不正直な; 詐欺的な; ごまかしの

Meaning

not honest; fraudulent; deceitful

Example

The dishonest salesman tried to sell them a broken car.

その不正直な販売員は、壊れた車を売ろうとした。

B1 verb /dɪˈtɜːrmɪn/

determine

決定する

Meaning

to decide; to find out exactly

Example

We must determine the cause of the problem.

私たちは問題の原因を特定する必要があります。

B1 verb /ˈdɪfər/

differ

異なる

Meaning

to be unlike or distinct from something else

Example

Opinions differ on this issue.

この問題について意見が異なります。

B1 noun /ˈdɛdˌlaɪnz/

deadlines

締め切り

Meaning

The latest time or date by which something should be completed.

Example

Setting deadlines helps finish tasks.

締め切りを設定することでタスクを終わらせるのに役立ちます。

B1 verb /ˈdoʊneɪt/

donate

寄付

Meaning

to give money, goods, or time to help others; to contribute

Example

She donates blood every three months.

彼女は毎月血液をドネートしています。

B1 verb /ˌdɪsəˈpɔɪnt/

disappoint

失望させる

Meaning

to fail to fulfill the hopes or expectations of someone; to make someone feel sad or displeased

Example

I hope I won't disappoint you with my performance.

私はパフォーマンスであなたを失望させたくない。

B1 noun dɪˈskʌvəriz

discoveries

発見

Meaning

The action or process of finding or learning something for the first time; facts or things discovered.

Example

His discoveries revolutionized multiple fields.

彼の発見は複数の分野で革命を起こした。

B1 verb /dɪsˈtrɪbjuːt/

distribute

配布する

Meaning

to give out or spread something among several people or places

Example

The teacher will distribute the test papers.

先生は試験の用紙を配布します。

B1 verb /dɪˈfaɪn/

define

定義する

Meaning

to explain the meaning of a word, phrase, or concept clearly

Example

The teacher asked the student to define the word 'democracy'.

先生は生徒に『民主主義』という言葉を定義するように頼んだ。

B1 verb /dɪˈleɪ/

delay

遅延

Meaning

to make something happen later than planned

Example

The flight was delayed due to bad weather.

悪天候のため、飛行機が遅れました。

B1 adverb /ˈdiːp.li/

Deeply

深く; 強く; 深く

Meaning

to a great depth; intensely; profoundly

Example

She breathed deeply before making her decision.

彼女は決断を下す前に深く息を吸いました。

B1 adjective /ˌdɪs.əˈpɔɪn.tɪd/

Disappointed

がっかり

Meaning

sad because something has not happened or is not as good as expected

Example

She was disappointed with her exam results.

彼女は試験の結果にがっかりしていた。

B1 verb /daɪn/

dine

食事する

Meaning

to eat a meal, especially the main meal of the day

Example

We usually dine at seven o'clock in the evening.

私たちは通常、夕方七時に食事します。

B1 noun dɪˈfens

defense

防御

Meaning

The action of defending from or resisting attack; protection from harm or danger.

Example

Defense was one of the central subjects.

防御は主要なテーマの一つだった。

B1 noun dɛt

debt

借金

Meaning

A sum of money that is owed or due.

Example

High levels of debt can lead to a financial crisis.

高い負債レベルは、金融危機を引き起こす可能性があります。

B1 adjective /ˈdefɪnət/

Definite

明確な; はっきりした; 特定の

Meaning

clearly stated or decided; not vague or uncertain; specific

Example

We need a definite answer by tomorrow.

私たちは明日までに明確な答えが必要です。

B1 verb /dɪˈlɪvər/

deliver

届ける

Meaning

to bring or hand over something to the intended recipient

Example

The courier will deliver the package tomorrow.

宅配便は明日荷物を届けます。

B1 verb /daɪv/

dive

飛び込む

Meaning

to plunge headfirst into water or another substance

Example

He decided to dive into the pool on a hot day.

彼は暑い日にプールにダイブすることに決めました。

B1 verb /dæm/

damn

Meaning

to condemn or criticize strongly; used as an expletive to express anger or emphasis

Example

He damned the unfair system in his speech.

B1 noun /ˈdaɪəɡræm/

diagram

図表

Meaning

a simplified drawing that shows the structure, relationship, or process of something

Example

The teacher explained the system using a clear diagram.

先生は分かりやすい図表を使ってシステムを説明した。

B1 noun /ˌdek.əˈreɪ.ʃən/

Decoration

装飾; 飾り; 賞;

Meaning

the process or art of decorating something; ornamental items used to beautify

Example

The Christmas decoration transformed the ordinary room into a festive wonderland.

クリスマスのデコレーションは、普通の部屋をお祝いのワンダーランドに変えました。

B1 adjective /ˈdɪstənt/

Distant

遠い

Meaning

far away in space or time; remote

Example

We could see a distant mountain on the horizon.

私たちは地平線に遠くの山を見ることができました。

B1 adjective ˌdem.əˈkræt.ɪk

democratic

民主的

Meaning

Relating to or supporting democracy or its principles.

Example

Democratic governance ensures equal rights.

民主的な統治は平等な権利を保証します。

B1 noun /dɪˈstrʌk.ʃən/

Destruction

破壊; 破壊;

Meaning

the action or process of causing damage to something so that it no longer exists

Example

The earthquake caused widespread destruction throughout the entire city.

地震は都市全体に広範囲な破壊を引き起こしました。

B1 noun /ˈdeə.ri/

Dairy

牛乳が生産される建物や農場; 牛乳から作られた製品; 牛乳と乳製品を販売する店

Meaning

a building or farm where milk is produced; products made from milk; a shop selling milk and milk products

Example

The local dairy provides fresh milk and cheese to the entire neighborhood.

地元のデイリーは、新鮮な牛乳とチーズを地域全体に提供しています。

B1 noun /dɪˈfens/

Defence

防御; 保護

Meaning

the action of defending from or resisting attack; protection or support

Example

The country strengthened its defence system against potential threats.

その国は潜在的な脅威に対抗するため、防御システムを強化しました。

B1 noun /ˈdɛv.əl/

devil

悪魔

Meaning

An evil spirit or supernatural being often regarded as the embodiment of wickedness and harm.

Example

The story warned children about making deals with the devil.

その話は子供たちに悪魔と取引をしないように警告した。

B1 verb /dɪˈpɑːrt/

depart

Meaning

to leave, especially to start a journey

Example

The train will depart at 9 a.m.

B1 adverb /ˈdaʊnwədz/

Downwards

下向き

Meaning

towards a lower place or position; in a downward direction

Example

The ball rolled downwards along the slope.

ボールは坂を下向きに転がった。

B1 adjective /ˈdaɪɪŋ/

Dying

死にかけている; 死亡している;

Meaning

approaching death; in the process of dying; fading away

Example

The dying plant needs water immediately.

死にかけている植物は直ちに水が必要です。

B1 noun /ˈdez.ət/

Desert

砂漠

Meaning

a barren area of landscape with little precipitation; an arid region with sparse vegetation

Example

The Sahara Desert is one of the largest hot deserts in the world.

サハラ砂漠は世界で最も大きな熱砂漠の一つです。

B1 adjective /draɪd/

dried

乾燥

Meaning

without moisture; preserved by removing water

Example

She added some dried flowers to the vase for decoration.

彼女は装飾のために花瓶に乾燥した花を加えた。

B1 noun ˌdemənˈstreɪʃənz

demonstrations

デモンストレーション

Meaning

The action or process of showing the existence or truth of something by giving proof or evidence.

Example

Demonstrations occurred on March 11.

デモンストレーションは3月11日に行われました。

B1 verb /dɪp/

dip

浸す

Meaning

to put something quickly into a liquid and take it out again

Example

She dipped her bread into the soup.

彼女はパンをスープに浸しました。

B1 adjective dɪˈleɪd

delayed

遅延

Meaning

Late or postponed; happening later than planned or expected.

Example

The Artemis mission was delayed due to technical challenges.

アルテミスミッションは技術的な課題のため遅延しました。

B1 noun/verb /ˈdɒkjʊmənt/

document

文書

Meaning

Noun: A written, printed, or electronic record that provides information or evidence. Verb: To record information in written or electronic form.

Example

She carefully documented all the expenses of the trip.

彼女は旅行のすべての費用を慎重にドキュメントした。

B1 verb/noun /ˈdiːkriːs/ (noun), /dɪˈkriːs/ (verb)

decrease

Meaning

To become or make something smaller or fewer in number, amount, or degree.

Example

The population of the town has decreased over the years.

B1 noun /dɪˈvɪʒən/

division

部門

Meaning

the action of separating something into parts; or a large administrative unit

Example

The company has a separate division for research and development.

会社には研究開発のための専用の部門があります。

B1 adverb /ˈdeɪndʒərəsli/

Dangerously

危険に

Meaning

in a way that could cause harm or injury; riskily

Example

He was driving dangerously fast on the highway.

彼は高速道路で危険に速く運転していた。

B1 adjective /ˈdɛdɪˌkeɪtɪd/

dedicated

献身的な

Meaning

devoted to a cause, task, or purpose

Example

She is a dedicated teacher who goes above and beyond for her students.

彼女は生徒のために上を行き、限界を超えていく献身的な教師です。

B1 noun /dɪˈbeɪt/

Debate

討論

Meaning

a formal discussion of opposing viewpoints; argument with reasoned points

Example

The political debate lasted for three hours with passionate arguments.

政治的な討論は3時間続き、情熱的な議論が交わされました。

B1 noun /ˌdes.tɪˈneɪ.ʃən/

Destination

目的地

Meaning

the place to which someone or something is going; the ultimate purpose or end point

Example

Paris was their dream destination for their honeymoon trip.

パリは彼らのハネムーン旅行の夢の目的地でした。

B1 noun /ˈdɛkeɪd/

decade

十年

Meaning

A period of ten years.

Example

The country has changed a lot in the past decade.

その国は過去10年間で大きく変わりました。

B1 noun /ˌdɛfɪˈnɪʃən/

definition

定義

Meaning

a statement that explains the meaning of a word or concept

Example

The dictionary gives a clear definition of the word.

辞書はその言葉の明確な定義を示します。

B1 noun /ˈdaɪ.ə.lɑːɡ/

Dialogue

対話; 会話

Meaning

a conversation between two or more people; discussion aimed at exploration of a subject

Example

The political leaders engaged in meaningful dialogue to resolve the conflict.

政治指導者たちは紛争解決のために有意義な対話を行いました。

B1 adjective /def/

Deaf

耳が聞こえない; 聴覚障害がある

Meaning

unable to hear; having a hearing impairment

Example

The deaf child learned to communicate using sign language.

そのろうの子供は手話を使ってコミュニケーションを学びました。

B1 noun /dɪˈlaɪt/

Delight

喜び; 楽しみ

Meaning

a feeling of happiness or pleasure; something that gives great pleasure

Example

The children's laughter filled her heart with pure delight.

子供たちの笑い声は彼女の心を純粋な喜びで満たしました。

B1 noun /ˌdiː.enˈeɪ/

dna

デオキシリボ核酸

Meaning

Deoxyribonucleic acid, the molecule that carries genetic information in living organisms.

Example

Scientists extracted DNA from the ancient bones.

科学者たちは古代の骨からDNAを抽出しました。

B1 verb /dɪˈfiːt/

Defeat

敗北

Meaning

to win a victory over; to overcome in battle or competition

Example

The army managed to defeat the enemy forces.

軍隊は敵軍を倒すことができました。

B1 adjective /dɪˈlaɪtɪd/

delighted

喜んで

Meaning

feeling or showing great pleasure and happiness

Example

She was delighted with the surprise gift.

彼女はサプライズギフトにとても喜んでいました。

B1 noun /dɪsk/

disk

ディスク / データ保存装置

Meaning

a flat, circular object, often used to store data electronically

Example

All the data is saved on a hard disk.

すべてのデータはハードディスクに保存されています。

B1 adjective /dɪˈtɜːrmɪnd/

determined

決心した

Meaning

Having firmly decided to do something and not letting anything stop you.

Example

She was determined to finish her studies despite many obstacles.

多くの障害があったにもかかわらず、彼女は学業を終わらせる決心をしていた。

B1 noun /dəˈrɛktər/ or /daɪˈrɛktər/

director

監督

Meaning

a person who manages or oversees a company, department, or film

Example

The director gave final approval for the new movie script.

監督は新しい映画の脚本に最終承認を与えました。

B1 verb /dɪˈvaɪd/

divide

分ける

Meaning

to separate into parts; to split or break apart

Example

Please divide the cake into eight pieces.

ケーキを8つに分けてください。

B1 verb /dɪˈklaɪn/

decline

減少する

Meaning

To become smaller, fewer, or less; to decrease gradually.

Example

The unemployment rate continues to decline.

失業率は減少し続けています。

B1 noun/adjective /ˌdɒkjʊˈmɛntri/

documentary

ドキュメンタリー映画

Meaning

A film or television program that provides a factual record or report.

Example

We watched a documentary about climate change.

私たちは気候変動についてのドキュメンタリー映画を見ました。

B1 noun /dɪˈskʌvəri/

discovery

発見

Meaning

The act of finding or learning something for the first time.

Example

The discovery of penicillin changed medical history.

ペニシリンの発見は医学の歴史を変えた。

B1 noun /doʊˈneɪ.ʃən/

Donation

寄付; 貢献

Meaning

something that is given to a charity, especially a sum of money; the act of giving

Example

The generous donation helped the hospital purchase new medical equipment.

寛大な寄付が病院に新しい医療機器を購入するのに役立ちました。

B1 noun /dɪˈtɛktɪv/

detective

探偵

Meaning

a person whose job is to investigate and solve crimes

Example

The detective solved the mystery in just two days.

探偵はわずか2日で謎を解決しました。

B1 adjective /dɪsˈeɪbld/

disabled

障害者

Meaning

having a physical or mental condition that limits movements, senses, or activities

Example

The park has special facilities for disabled people.

公園には障害者用の特別な施設があります。

B1 noun /ˈded.laɪn/

Deadline

締め切り;

Meaning

the latest time or date by which something should be completed

Example

The deadline for submitting the project is next Friday.

プロジェクト提出の締め切りは来週の金曜日です。

B1 noun /dɪˈmænd/

Demand

需要；消費者の商品の要求

Meaning

an urgent request; the desire of consumers for goods or services

Example

The demand for organic food has increased significantly in recent years.

オーガニック食品の需要は近年顕著に増加しています。

B1 noun /dɪsk/

disc

平らで薄く、円形の物体

Meaning

a flat, thin, round object or surface

Example

He inserted the music disc into the player.

彼は音楽ディスクをプレーヤーに挿入した。

B1 verb /dɪˈpɛndɪŋ/

depending

依存する

Meaning

Being contingent on or influenced by something.

Example

The success of the plan is depending on the team's effort.

計画の成功はチームの努力に依存しています。

B1 verb /dɪˈnaɪ/

deny

否定する

Meaning

to refuse to accept or admit something; to declare something untrue

Example

He denied stealing the money.

彼はお金を盗んだことを否定した。

B1 noun /dɪˈpɑː.tʃər/

Departure

出発

Meaning

the action of leaving, especially to start a journey; a deviation from an established course

Example

The departure of the train was delayed by thirty minutes due to technical issues.

列車の出発は技術的な問題で30分遅れました。

B1 noun /ˈdrɛsɪŋ/

dressing

ドレッシング / 調味料の混合物

Meaning

a sauce for salads; or material used to cover a wound

Example

She prepared a delicious salad with Italian dressing.

彼女はイタリアンドレッシングで美味しいサラダを作った。

B1 verb /dɪˈklɛər/

declare

宣言する

Meaning

To announce something formally or officially.

Example

The government declared a state of emergency.

政府は緊急事態を宣言しました。

B1 verb /dræɡ/

drag

引きずる

Meaning

to pull something heavy or difficult to move along the ground; to go somewhere unwillingly; to last too long

Example

She had to drag the heavy suitcase up the stairs.

彼女は重いスーツケースを階段で引きずらなければならなかった。

B1 verb /dɪˈliːt/

delete

Meaning

to remove or erase something, especially written or recorded information

Example

He accidentally deleted all the files from his computer.

B1 adjective /dɪˈmændɪŋ/

demanding

要求が厳しい

Meaning

requiring much effort, skill, or attention; difficult to satisfy

Example

The job is very demanding and requires long hours of work.

その仕事は非常に要求が厳しく、長時間の労働が必要です。

B1 adjective /drəˈmæt.ɪk/

Dramatic

ドラマチック; 突然で驚くべき; 興奮させると印象的

Meaning

relating to drama; sudden and striking; exciting and impressive

Example

The dramatic sunset painted the sky in brilliant colors.

ドラマティックな夕焼けが空を明るい色で染めた。

B1 verb /dɪˈspleɪ/

display

表示する

Meaning

to show or exhibit; to present for others to see

Example

The museum displays ancient artifacts.

博物館は古代の遺物を表示しています。

B1 verb /dɪˈvɛləpɪŋ/

developing

開発

Meaning

the process of growing, improving, or becoming more advanced

Example

She is developing new skills in programming.

彼女はプログラミングで新しいスキルを開発しています。

B1 noun ˌdɪsədˈvæntɪdʒ

disadvantage

不利

Meaning

An unfavorable circumstance or condition that reduces the chances of success or effectiveness.

Example

Urdu's dominance placed Bengalis at a disadvantage.

ウルドゥー語の支配がベンガル語話者を不利な立場に追い込んだ。

B1 verb /dɪɡ/

dig

掘る

Meaning

to break up and move earth with a tool or machine, or with hands, paws, etc.

Example

They decided to dig a hole for the new tree.

彼らは新しい木のために穴を掘ることを決めました。

B1 adverb /ˈdef.ɪ.nət.li/

Definitely

間違いなく

Meaning

without doubt; certainly; clearly

Example

I will definitely attend the meeting tomorrow.

私は明日のミーティングに必ず出席します。

B1 verb /ˈdɛmənˌstreɪt/

demonstrate

示す

Meaning

to clearly show or prove something through evidence, explanation, or action

Example

The teacher demonstrated the experiment to the class.

先生はクラスに実験をデモンストレートしました。

B1 noun /dʌst/

dust

ほこり

Meaning

Fine particles of matter.

Example

Road dust is a major pollutant in urban areas.

道路のほこりは都市部で主要な汚染物質です。

B1 noun /ˌdɪsəˈpɔɪntmənt/

disappointment

失望

Meaning

the feeling of sadness or displeasure caused by the non-fulfillment of one's hopes or expectations

Example

Her face showed deep disappointment after hearing the results.

結果を聞いた後、彼女の顔には深い失望が表れていた。

B1 noun /dɜːrt/

Dirt

汚れ; 土; 不潔な物質

Meaning

a substance that makes something unclean; earth or soil; unclean matter

Example

After playing in the garden, the children were covered in dirt from head to toe.

庭で遊んだ後、子供たちは頭から足まで汚れで覆われていました。

B1 adjective /ˈdiːsənt/

decent

立派

Meaning

conforming to standards of propriety, good taste, or morality

Example

He found a decent job after months of searching.

彼は数ヶ月の探しの後、立派な仕事を見つけました。

B1 noun dɪˈmɒk.rə.si

democracy

民主主義

Meaning

A system of government by the whole population or all the eligible members of a state, typically through elected representatives.

Example

Democracy ensures equal rights for all citizens.

民主主義はすべての市民に平等な権利を保障します。