learning
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A2 noun /ˈlɜrnɪŋ/

learning

学习
Meaning
The process of gaining knowledge or skills through study or experience.
Example
Learning a new language can be exciting.
学习一门新语言可能是令人兴奋的。
B1 noun /ˈleɪ.ər/

Layer

层; 层次;
Meaning
a sheet, quantity, or thickness of material, typically one of several, covering a surface or body
Example
The cake has three layers of chocolate.
蛋糕有三层巧克力。
C1 adjective /ˈluː.krə.tɪv/

lucrative

有利可图
Meaning
Producing a great deal of profit; highly profitable or financially rewarding.
Example
The real estate business is highly lucrative in urban areas.
房地产行业在城市地区非常有利可图。
B1 noun /ˈleɪ.bəl/

Label

标签
Meaning
a small piece of paper or material attached to something to identify or describe it
Example
Please read the label carefully before taking any medication.
请在服用任何药物之前仔细阅读标签。
B1 noun /ˈlɪm.ɪt/

Limit

限制; 限度
Meaning
a point or level beyond which something does not or may not extend or pass; the greatest amount allowed
Example
There is a speed limit on this road.
这条路上有速度限制。
B2 noun /ˈleɪbərər/

laborer

工人
Meaning
a person who does physical work, especially work that requires strength rather than skill
Example
The laborer worked long hours at the construction site.
这名工人在建筑工地长时间工作。
B1 noun ˈlæŋɡwɪdʒ æps

language apps

语言学习应用
Meaning
Mobile or computer applications designed to help users learn new languages through interactive lessons and exercises.
Example
Language apps make learning easier.
语言应用程序使学习变得更加容易。
C2 adjective /ˈliːwərd/

leeward

背风面
Meaning
On or toward the sheltered side away from the wind.
Example
They built their camp on the leeward side of the hill.
他们在山丘的背风面搭建了营地。
B1 adjective /ˈlaɪv.li/

Lively

充满活力的; 活泼的; 快乐的
Meaning
full of life and energy; animated; cheerful
Example
The children had a lively discussion about their favorite books.
孩子们就他们最喜欢的书进行了充满活力的讨论。
B2 adjective /ˈlækɪŋ/

lacking

缺乏
Meaning
not having enough of something; missing
Example
His report was lacking in detail.
他的报告缺少细节。
C2 noun /ˈlɪnəmənt/

liniment

擦剂 / 洛神
Meaning
A liquid or lotion applied to the skin to relieve pain or stiffness.
Example
He rubbed liniment on his sore muscles after the workout.
他在训练后擦上了伤痛的肌肉上了擦剂。
C1 adjective /ləˈbɔːr.i.əs/

laborious

费力的
Meaning
requiring considerable effort and time; difficult and hard-working
Example
Writing the long report was a laborious task.
写长报告是一项费力的任务。
A2 verb /laɪ/

lie

撒谎, 躺着
Meaning
to be in a horizontal position; to tell an untruth
Example
The book lies on the table.
书放在桌子上。
B1 noun /ˈlek.tʃər/

Lecture

讲座
Meaning
an educational talk to an audience, especially to students in a university or college
Example
The professor gave an interesting lecture on history.
教授做了一个有趣的历史讲座。
B2 noun /ˈlaɪ.kli.hʊd/

likelihood

可能性
Meaning
the chance or probability of something happening
Example
There is a strong likelihood of rain tomorrow.
明天有很大的降雨可能性。
C1 noun /ˈlɛk.sɪ.kɒn/

lexicon

词汇
Meaning
The vocabulary of a person, language, or branch of knowledge; a collection of words and terms.
Example
A translator must have a vast lexicon of both languages.
翻译人员必须掌握两种语言的广泛词汇。
C1 adjective /ˈlɪvɪd/

livid

愤怒的
Meaning
Extremely angry; furious.
Example
She was livid when she found out about the betrayal.
当她发现背叛时，她愤怒不已。
C2 noun /ˈlɔːŋ.ɡən/

Longan

龙眼
Meaning
a small round tropical fruit with translucent white flesh and sweet taste, related to lychee
Example
Longan fruits are often eaten fresh or dried and are popular in Asian desserts.
龙眼果通常鲜食或晒干，在亚洲甜点中很受欢迎。
A2 adjective /ˈloʊn.li/

Lonely

孤独的; 孤立的
Meaning
solitary; isolated; without companions
Example
She felt lonely after moving to a new city.
她在搬到一个新城市后感到孤独。
C1 verb /lʊər/

lure

诱惑
Meaning
to attract or tempt someone, often by offering something appealing
Example
The advertisement lured customers with promises of discounts.
广告通过承诺折扣诱使顾客。
B1 verb /loʊˈkeɪt/

locate

定位
Meaning
to find the exact position or place of something
Example
They managed to locate the missing keys under the couch.
他们成功地在沙发下找到丢失的钥匙。
C2 noun /ˈlɪθəˌtaɪp/

lithotype

石印类型 (印刷表面)
Meaning
a printing surface or type made for lithography
Example
The printer used a lithotype to produce multiple copies of the design.
打印机使用石印类型来制作设计的多个副本。
C1 noun, verb /ˈliːvər/ or /ˈlɛvər/

lever

杠杆，刚性杆
Meaning
a rigid bar used to move or lift heavy objects; to move something using leverage.
Example
He used a lever to lift the heavy stone.
他使用了一个杠杆来举起重石。
C2 noun /ˌlæs.əˈreɪ.ʃən/

laceration

深切伤口
Meaning
a deep cut or tear in skin or flesh
Example
He needed stitches for a laceration on his leg.
他需要为腿部的深切伤口缝针。
B1 adverb /ˈlɪtərəli/

literally

字面上
Meaning
in a literal manner or sense; exactly
Example
He was literally running for three hours without stopping.
他字面上跑了三个小时没有停下来。
C2 noun /ˈlæsɪtjuːd/

lassitude

疲劳
Meaning
a state of physical or mental weariness; lack of energy
Example
After the long hike, a feeling of lassitude swept over the group.
长时间徒步后，疲劳感笼罩了整个团队。
C2 adjective /ˈleɪ.baɪl/ or /ˈlæb.aɪl/

labile

不稳定的
Meaning
easily altered or unstable; prone to change
Example
Her mood was so labile that it changed several times in an hour.
她的情绪如此不稳定，在一小时内改变了几次。
C1 adjective /ˈlɔː.ləs/

Lawless

无律; 无政府主义; 混乱; 犯罪
Meaning
without law; anarchic; unruly; criminal
Example
The frontier town was known for its lawless behavior and chaos.
边境城市以其无律行为和混乱而闻名。
B1 noun /ˈlaɪf.staɪl/

lifestyle

生活方式
Meaning
The way in which a person or group lives, including habits, attitudes, and possessions.
Example
A healthy lifestyle includes regular exercise and a balanced diet.
健康的生活方式包括定期锻炼和均衡饮食。
C2 noun /ˈlɪɡ.ə.tʃər/

ligature

连字
Meaning
A thing used for tying or binding tightly; in music/printing, two or more notes or letters joined together.
Example
The doctor used a ligature to stop the bleeding.
医生使用了连字来停止出血。
A2 noun /ˈlem.ən/

Lemon

柠檬
Meaning
a yellow citrus fruit with acidic juice
Example
She squeezed a lemon into her tea.
她把一个柠檬挤进了她的茶里。
B2 adjective /ˈlʌvəbl̩/

loveable

幸福
Meaning
easy to love; endearing or charming
Example
The puppy was so loveable that everyone wanted to hold it.
当她收到奖项时，她无法掩饰自己的幸福。
C1 verb /ˈluːbrɪkeɪt/

lubricate

润滑
Meaning
to apply oil or grease to reduce friction between surfaces
Example
The mechanic lubricated the car engine parts.
机械师为汽车发动机部件上了润滑油。
C1 noun ˌlɪb.ər.ə.laɪˈzeɪ.ʃən

liberalization

自由化
Meaning
The removal or loosening of restrictions on something, typically an economic or political system.
Example
The liberalization of trade policies attracted foreign investments.
贸易政策的自由化吸引了外国投资。
C1 noun /ˈloʊ.fər/

Loafer

懒人，避免工作或努力的人
Meaning
a person who avoids work or effort; an idler
Example
Don't be a loafer, help us with the work.
不要做洛费尔，帮我们做工作。
B2 noun /ˈlɛtɪs/

lettuce

生菜
Meaning
a leafy green vegetable commonly used in salads and sandwiches
Example
She added fresh lettuce to the sandwich.
她在三明治里加了新鲜的生菜。
C2 adjective /ləˈsɪviəs/

lascivious

淫荡
Meaning
showing an overt and often offensive sexual desire
Example
The lascivious remarks made everyone uncomfortable.
那些淫荡的评论让每个人都感到不舒服。
C2 adjective /ˈlaɪbələs/

libelous

诽谤的
Meaning
containing or constituting a false published statement that damages a person's reputation
Example
The article was found to be libelous and had to be retracted.
该文章被认为是诽谤的，必须撤回。
B2 noun /leɪs/

Lace

花边
Meaning
a delicate fabric made of yarn or thread in an open weblike pattern; a cord or string for fastening
Example
She wore a beautiful dress decorated with intricate lace patterns.
她穿着一件精美的衣服，装饰着复杂的花边图案。
B2 adjective /ˈles.ər/

Lesser

较小
Meaning
smaller in amount; of lower importance; inferior
Example
He chose the lesser of two evils when making his decision.
他在做决定时选择了较小的恶。
B1 noun /lɔk/

Lock

锁
Meaning
a mechanism for keeping a door, lid, etc., fastened, typically operated only by a key of a particular form
Example
Make sure you lock the door before leaving.
确保在离开前锁好门。
C2 phrase /lɛt ðɛm ˈθɪə.ri/

let them theory

让他们随心所欲的理论
Meaning
A philosophy of not trying to control others' actions or opinions and allowing them to be themselves.
Example
He follows the Let them theory and ignores negativity.
他遵循“让他们”理论，并忽视负面情绪。
B1 adjective /ˌlɛftˈhændɪd/

left-handed

左撇子
Meaning
Using or done with the left hand; also can mean clumsy or awkward.
Example
She is left-handed and writes beautifully with her left hand.
她是左撇子，左手写字非常漂亮。
A2 noun, verb /lɪŋk/

link

连接
Meaning
a connection between two things; to connect or associate
Example
The article includes a link to the official website.
文章包含指向官方网站的链接。
C2 adjective /ˈlæŋɡwɪd/

Languid

无力的; 懒惰的; 虚弱的
Meaning
lacking energy or vitality; slow and relaxed; weak or faint
Example
After the long journey, she felt languid and needed to rest.
经过长时间的旅程后，她感到无力并需要休息。
B2 noun ˈlɪt.ər.ə.si ˌreɪts

literacy rates

识字率
Meaning
The percentage of people in a population who can read and write; measures of educational levels in a population.
Example
Literacy rates impact socioeconomic conditions.
识字率影响着社会经济状况。
B2 noun /lʌŋ/

Lung

肺
Meaning
either of the two organs in the chest that you use for breathing
Example
Smoking can cause serious damage to your lungs.
吸烟可能会对你的肺造成严重损害。
B2 adjective /liːn/

Lean

瘦; 脂肪少; 虚弱
Meaning
thin; having little fat; weak
Example
He has a lean and muscular body.
他有一个瘦而健壮的身体。
A2 noun /ˈlʌɡ.ɪdʒ/

Luggage

行李
Meaning
suitcases or other bags in which to pack personal belongings for traveling
Example
Please check your luggage at the airport counter.
请在机场柜台检查您的行李。
B1 noun /ˈleɪ.bər/

Labour

体力或脑力劳动
Meaning
work involving physical or mental effort; workers as a group
Example
The construction required months of hard labour to complete.
这项建设工程需要数月的辛勤劳动才能完成。
C2 adjective /ˈluː.ni/

Loony

疯狂的; 傻的; 精神不稳定
Meaning
crazy; silly; mentally unstable
Example
His loony behavior made everyone laugh.
他的疯狂行为让每个人都笑了。
C2 noun /lækˈteɪʃən/

lactation

乳汁分泌
Meaning
the secretion of milk by the mammary glands of female mammals
Example
The doctor explained that lactation is a natural process after childbirth.
医生解释说，哺乳是分娩后的一种自然过程。
B2 adjective /ˈlɒŋ ˈstændɪŋ/

long-standing

长期的
Meaning
having existed or continued for a long period of time
Example
They have a long-standing relationship with their suppliers.
他们与供应商之间有着长期的合作关系。
C2 noun /laʊs/

Louse

虱子
Meaning
a small insect that lives on the hair or skin of people or animals
Example
The child had a louse in his hair.
孩子的头发里有一只虱子。
A1 noun, verb /laɪn/

line

线
Meaning
A long narrow mark or band; a row of people or things; to cover the inside surface of something.
Example
People waited in a long line outside the theater.
人们在剧院外排着长队等候。
C1 verb /lɜːrk/

lurk

潜伏
Meaning
to remain hidden so as to wait for an opportunity to attack or observe
Example
A stranger lurked in the shadows.
一个陌生人潜伏在阴影中。
B2 noun /liːk/

Leak

漏洞; 漏水
Meaning
a hole in a container or covering through which contents escape or enter accidentally
Example
There is a leak in the water pipe.
水管里有一个漏洞。
C2 noun /ˈlænjæp/

lagniappe

额外礼物
Meaning
A small gift or bonus given by a seller to a customer.
Example
The shopkeeper offered a piece of candy as a lagniappe.
店主作为额外礼物提供了一颗糖果。
B2 noun ˈlaɪf ɪkˌspek.tən.si

life expectancy

预期寿命
Meaning
The average period that a person may expect to live; the length of time for which something is expected to last or to continue being effective.
Example
Life expectancy depends on healthcare quality.
预期寿命取决于医疗保健质量。
C1 noun /ˈlɛktən/

lectern

讲台
Meaning
A tall stand with a sloping top used to support a book, notes, or script during a speech or lecture.
Example
The professor placed her notes on the lectern before starting her lecture.
教授在开始讲座之前，把笔记放在讲台上。
B2 adjective /ˈlɛdʒɪslətɪv/

legislative

立法的
Meaning
relating to the making of laws
Example
The legislative body passed the new tax bill.
立法机构通过了新的税法。
C2 noun /ˈlɒdʒ.mənt/

lodgment

临时住宿
Meaning
The act of lodging or a place of temporary stay; also a deposit of something.
Example
The soldiers found lodgment in the abandoned house.
士兵们在废弃的房子里找到了临时住宿。
C1 noun /ˈlʌɡ.ɪdʒ væn/

Luggage van

行李车
Meaning
a vehicle designed for carrying luggage and cargo
Example
The luggage van carried all the passengers' suitcases.
行李车载着所有乘客的行李箱。
A2 noun /ˈlaɪ.ən/

Lion

狮子
Meaning
a large tawny-colored cat that lives in prides, found in Africa and northwestern India
Example
The lion roared loudly in the savanna.
狮子在大草原上大声咆哮。
B1 adjective /ˈlɪmɪtɪd/

limited

有限的
Meaning
Restricted in size, amount, or extent; not great in number or ability.
Example
Tickets for the concert are limited.
音乐会的票是有限的。
C2 /laɪð/

lithe

灵活且优雅
Meaning
thin, supple, and graceful in movement
Example
The lithe dancer captivated the audience with her graceful spins.
灵活的舞者用她优雅的旋转迷住了观众。
C2 verb /lʌɡ/

lug

Meaning
to carry or drag something heavy or cumbersome with effort
Example
He had to lug the suitcase up three flights of stairs.
C2 noun /ˌlɪk.wəˈfeɪ.ʃənt/

liquefacient

液化剂
Meaning
a substance that causes something to become liquid
Example
The chemist explained how the liquefacient worked in the experiment.
化学家解释了液化剂在实验中的作用。
C2 adjective /ˈleɪ.tɪʃ/

latish

稍微晚一点
Meaning
Somewhat late; occurring or arriving later than usual but not very late.
Example
We arrived latish to the party but still caught most of the fun.
我们稍微晚一点到达了聚会，但仍然赶上了大部分的乐趣。
A2 verb/adjective /lɒst/

lost

丢失
Meaning
Unable to find the way; no longer in possession of something.
Example
He lost his keys and couldn’t enter the house.
他丢失了钥匙，无法进入房子。
B2 noun, verb /laʊndʒ/

lounge

休息室
Meaning
A public room for relaxing; or to sit, lie, or stand in a relaxed way.
Example
They lounged on the sofa after dinner.
他们在晚餐后懒洋洋地躺在沙发上。
C1 noun lɪˈkwɪd.ə.ti

liquidity

流动性
Meaning
The availability of liquid assets to a market or company; the ability to convert assets into cash quickly.
Example
Maintaining liquidity is crucial for financial stability.
维持流动性对财务稳定至关重要。
C1 noun /ˈlaɪbəl/

libel

诽谤
Meaning
a published false statement that damages a person's reputation
Example
The newspaper was sued for libel after publishing false claims.
报纸因发布虚假声明而被起诉诽谤。
A1 noun /lʌntʃ/

Lunch

午餐
Meaning
a meal eaten in the middle of the day, typically one that is lighter or less formal than an evening meal
Example
We had lunch at a nice restaurant downtown.
我们在市中心的一家不错的餐厅吃了午餐。
C1 adjective /ˈlæv.ɪʃ/

Lavish

奢华; 奢侈; 慷慨
Meaning
expensive; elaborate; extravagant; generous
Example
The wedding was a lavish celebration with hundreds of guests.
婚礼是一场奢华的庆祝活动，邀请了数百名宾客。
C1 adjective /ˈlaʊzi/

lousy

糟糕
Meaning
of very poor quality; bad or unpleasant
Example
He felt lousy after catching the flu.
他在得了流感后感觉很糟糕。
C1 adjective /ˈluː.mɪ.nəs/

Luminous

光亮的; 发光的; 明亮的
Meaning
bright; shining; emitting light; radiant
Example
The luminous stars filled the dark night sky.
明亮的星星照亮了黑暗的夜空。
C2 noun ˈlɪɡ.nəʊˌsæt

LignoSat

木卫星
Meaning
A wooden satellite that demonstrates the use of wood in space technology.
Example
LignoSat demonstrates the use of wood in space.
LignoSat 展示了木材在太空中的应用。
C2 noun /ˈlɪmərɪk/

limerick

一种幽默的五行诗
Meaning
a humorous five-line poem with a specific rhythm and rhyme scheme (AABBA).
Example
She recited a funny limerick at the party.
她在派对上背诵了一首有趣的利梅里克。
B2 adjective; verb (past and past participle) /lɜːrnd/

learned

博学的
Meaning
having acquired much knowledge through study; gained knowledge or skill through experience or teaching
Example
She is a learned scholar with deep knowledge of history.
她是一位对历史有深厚了解的博学学者。
C1 noun /lɪˈɡæl.ə.ti/

Legality

合法性
Meaning
the quality or state of being legal; accordance with the law
Example
The lawyer questioned the legality of the contract.
律师质疑合同的合法性。
B2 noun /ˈlen.tɪl/

Lentil

小扁豆
Meaning
a high-protein pulse which is dried and then soaked and cooked prior to eating
Example
She cooked red lentils for dinner tonight.
她今晚做了红扁豆作为晚餐。
C1 adjective ˈleɪ.tənt

latent

潜在的或隐藏的
Meaning
Existing but not yet developed or manifested; hidden potential.
Example
His artistic talent remained latent for years.
他的艺术才华多年来一直处于潜在状态。
C2 noun /ˈlɪθəˌɡræf/

lithograph

石版画 (石头印刷)
Meaning
a print made by lithography, often artistic
Example
The museum displayed a rare lithograph from the 19th century.
博物馆展示了一幅19世纪的稀有石版画。
C2 noun /ˈliː.vɪŋz/

Leavings

剩余物; 残留物
Meaning
things that have been left behind or remain; remnants or scraps
Example
The leavings from dinner were given to the dog.
晚餐的剩余物被给了狗。
C2 noun /ˈleɪ.ɪ.ti/

laity

俗人
Meaning
Ordinary members of a religious community who are not clergy.
Example
The church welcomed the laity to participate in the event.
教堂欢迎俗人参加活动。
A2 adjective/adverb /laʊd/

loud

响亮
Meaning
Producing or capable of producing much noise.
Example
The music was too loud to concentrate.
音乐太响了，无法集中注意力。
A2 noun /ˈlɜːrnər/

learner

学习者
Meaning
a person who is acquiring knowledge or skill through study or experience
Example
She is a fast learner.
她学得很快。
B2 verb /liːp/

leap

跳跃
Meaning
to jump high or far; to move quickly with large steps
Example
The cat leaped onto the table.
猫跳上了桌子。
C2 adjective /ˈliːənaɪn/

leonine

像狮子一样的
Meaning
Of or resembling a lion.
Example
His leonine hair made him stand out in the crowd.
他那像狮子一样的头发让他在人群中显得与众不同。
C1 noun /lʌmp/

Lump

块; 团; 块状物
Meaning
a compact mass of a substance, especially one without a definite or regular shape
Example
She found a lump of sugar in the bowl.
她在碗里发现了一块糖。
C1 adjective ləˈθɑːrdʒɪk

lethargic

昏睡
Meaning
Being inactive due to lack of physical or mental energy
Example
After a heavy meal, he felt lethargic and sleepy.
吃了丰盛的晚餐后，他感到昏睡和困倦。
C2 noun /ˈlaɪər/

lier

说谎者
Meaning
a person who tells lies; an alternative spelling of liar
Example
No one trusted him because he was known as a habitual lier.
因为他是个惯常的说谎者，所以没人信任他。
B2 adjective ˈlɒdʒ.ɪ.kəl

logical

逻辑的
Meaning
Of or according to the rules of logic or formal argument.
Example
Logical circuits ensure effective computation.
逻辑电路确保有效计算。
B1 adverb /ˈleɪt.li/

Lately

最近; 近来;
Meaning
recently; in the recent past; not long ago
Example
I haven't seen him lately, but I heard he got a new job.
我最近没见过他，但听说他找到了新工作。
B2 noun /ˈlɪkər/

liquor

Meaning
Alcoholic drinks, especially strong distilled ones such as whiskey or vodka.
Example
The shop sells both beer and hard liquor.
C1 noun /ˈlʌləˌbaɪ/

lullaby

摇篮曲
Meaning
a soothing song sung to help a child fall asleep
Example
She sang a lullaby to her baby every night.
她每晚都会唱摇篮曲给她的宝宝听。
C1 noun ˌlaɪ.əˈbɪl.ə.ti

liability

责任
Meaning
The state of being responsible for something, especially by law; a debt or financial obligation.
Example
The company's liabilities exceeded its assets.
公司的负债超过了它的资产。
C1 noun /luːm/

Loom

织布机
Meaning
a machine for weaving cloth; to appear threatening or menacing
Example
The weaver worked at the loom to create beautiful fabrics.
织工在织布机上工作，创造美丽的面料。
B1 noun /ˈloʊnlinəs/

Loneliness

孤独
Meaning
The state of being alone and feeling sad about it.
Example
She felt a deep sense of loneliness after moving to the new city.
她搬到新城市后感到深深的孤独。
B2 noun /ˈlɪn.ən/

linen

麻布织物
Meaning
A strong cloth made from the fibers of the flax plant, or items made from this cloth such as sheets or clothing.
Example
She bought new linen curtains for the living room.
她为客厅买了新的麻布窗帘。
C2 adjective /ˈlʌstrəs/

lustrous

光泽
Meaning
having a gentle sheen or soft glow
Example
Her hair looked smooth and lustrous.
她的头发看起来光滑而光泽。
C2 noun /lʌɡˈʒʊəriəns/

luxuriance

奢华
Meaning
abundant growth, richness, or elegance
Example
The garden was filled with the luxuriance of tropical plants.
花园里充满了热带植物的奢华。
B2 noun /loʊf/

Loaf

面包
Meaning
a shaped mass of bread baked as a unit
Example
She bought a fresh loaf of bread from the bakery.
她从面包店买了一个新鲜的面包。
C2 noun /lɒx/ or /lɒk/

lough

湖泊
Meaning
An Irish or Scottish word for a lake or sea inlet.
Example
The fishermen lived by the lough for generations.
渔民们世世代代住在湖泊旁边。
A2 verb /ˈloʊər/

lower

降低
Meaning
to move something to a lower position or to reduce
Example
The company decided to lower the prices.
公司决定降低价格。
B2 noun /ˈlɪz.ɚd/

Lizard

蜥蜴
Meaning
a cold-blooded reptile with a long body, four legs, and a tail
Example
A small lizard ran across the garden wall.
一只小蜥蜴跑过了花园的墙壁。
C2 adjective /læŋk/

lank

高而瘦
Meaning
Tall, thin, and often awkward in appearance.
Example
The lank teenager towered over his classmates.
那个高而瘦的少年比他的同班同学高。
B2 adjective /ˈlɔːŋtaɪm/

longtime

长期的
Meaning
having existed or continued for a long time
Example
They are longtime friends who met in college.
他们是大学时认识的长期朋友。
C1 noun /ˈliːʒən/

lesion

损伤
Meaning
An area of damage or abnormal change in the tissue of an organism, often caused by injury or disease.
Example
The doctor examined the skin lesion carefully.
医生仔细检查了皮肤上的损伤。
C2 noun /ˌluː.mɪˈnɛs.əns/

luminescence

发光现象
Meaning
The emission of light by a substance not resulting from heat; a type of cold light.
Example
The luminescence of the fireflies lit up the forest.
萤火虫的发光现象照亮了森林。
B1 noun /ˈlæftər/

laughter

笑声
Meaning
the act or sound of laughing
Example
The room was filled with laughter.
房间里充满了笑声。
B2 adjective /ˈlɪt.ər.ət/

Literate

文盲; 有教育的; 受过良好教育的
Meaning
able to read and write; educated; well-educated
Example
She is a very literate person who reads extensively.
她是一个非常有文化的人，广泛阅读。
A1 noun /lænd/

Land

土地; 土壤
Meaning
the part of the earth's surface that is not covered by water; an area of ground, soil, or earth
Example
The farmer worked hard to cultivate his land and grow healthy crops.
农民努力耕种他的土地，种植健康的作物。
C1 verb /ˈlʌmbər/

lumber

笨重行走
Meaning
to move in a slow, heavy, awkward way
Example
The bear lumbered through the forest in search of food.
那只熊在森林中沉重地走着寻找食物。
B1 noun /lenz/

lens

镜头
Meaning
a curved piece of glass or plastic that makes things look clearer or larger when you look through it
Example
He cleaned the camera lens before taking the picture.
他在拍照前清洁了相机镜头。
C1 adjective /ˈlʌʃəs/

luscious

美味的
Meaning
deliciously sweet or rich; highly appealing to the senses
Example
She served a luscious chocolate cake.
她端上了一块美味的巧克力蛋糕。
B2 noun /lɔːntʃ/

Launch

快艇
Meaning
a large motorboat or a boat used to transport people and goods
Example
We took a launch to cross the river.
我们乘坐快艇穿越了河流。
C1 adjective /ˈlɪstləs/

listless

无精打采
Meaning
lacking energy, enthusiasm, or interest
Example
She felt listless after working long hours without rest.
她在没有休息的长时间工作后感到无精打采。
C2 adjective /ˈlæk.ti.əl/

lacteal

与牛奶相关或类似牛奶的
Meaning
Relating to or resembling milk; conveying chyle or milky fluid.
Example
The lacteal vessels in the small intestine absorb dietary fats.
小肠中的乳汁管吸收膳食脂肪。
A2 phrasal verb /lʊk ˈɑːftər/

look after

照顾
Meaning
to take care of someone or something; to be responsible for someone’s well-being
Example
She looks after her younger brother while their parents are at work.
父母上班时，她照顾弟弟。