lab [læb] (= laboratory)n. 實(shí)驗(yàn)室
fridge – refrigerator
phone – telephone
flu - influenza
language lab n. 語言實(shí)驗(yàn)室， 語音室
lack[læk] v. 缺乏(be short of)n. 缺乏(absence, shortage)，沒有
lack of ... ...的缺少
for lack of... 因缺乏...
e.g. he is lack of passion熱情 in work.
lag[læg] n./vi.(lagged, lagged, lagging) 落后(drop behind, get behind)
lag behind ... 落在...的后面
e.g. the children always lag behind when we go for a walk.
land [lænd] n. 陸地(earth)，土地(soil)， 國土v. (使)登陸
land transportation 陸上運(yùn)輸
forest land 林地
e.g. we are glad to be on land again.
language n. 語言(tongue)
an official language 官方語言
spoken [oral] language 口語
written language 書面語言
e.g. chinese is my native language.
laugh vi./n. 笑
laugh at... 嘲笑...
laugh... off 用笑擺脫...
laugh in sb.'s face 當(dāng)面嘲笑某人
laughter ['lɑ:ftə] n. 笑, 笑聲
e.g. don't laugh at him laughter is the best medicine.
launch vt.發(fā)射(導(dǎo)彈、火箭等)(send off, set off)，發(fā)起(begin, initiate, set up, start )n. 發(fā)射
launch an artificial satellite 發(fā)射人造衛(wèi)星
e.g. they have launched a man-made satellite successfully.
law n. 法律，規(guī)律(rule, principle)
observe/keep/follow a law 守法
enforce a law 執(zhí)法
the laws of nature 自然規(guī)律
e.g. i have to follow nature's law.
lay [lei]vt.(laid, laid, laying) 放置(put, place)，鋪設(shè)，布置，產(chǎn)(卵)
lay... off (臨時(shí))解雇...
lay... aside 擱置..., 積蓄...
lay down... 制定...，放下...
lay out 布置, 展示
e.g. we shall have to dig挖under the river to lay the sewage 污水pipe.管道
lead [li:d] v.(led, led, leading) 領(lǐng)導(dǎo)(guide, direct, head, preside over, supervise)，(道路等)通向，導(dǎo)致n. 鉛， 領(lǐng)導(dǎo)
lead sb. in doing... 領(lǐng)導(dǎo)某人做...
lead a ... life 過...生活
lead to... 導(dǎo)致..., 通向...
take the lead 帶頭
e.g. the guide向?qū)ed us to the river.
leader ['li:də] n. 領(lǐng)袖，領(lǐng)導(dǎo)者
e.g. he's a follower, not a leader.
leadership n. 領(lǐng)導(dǎo)能力
under the leadership of... 在...的領(lǐng)導(dǎo)之下
e.g. he shows quality才能 of leadership.
learn [lə:n]v. (learnt/learned, learnt/learned, learning)學(xué)習(xí)(study)，學(xué)會(huì)(acquire, grasp, master)，得知(know)， 記住(bear in mind, memorize)
learn ...by heart 記住...
learn from... 向...學(xué)習(xí)
learn of/about... 得知...， 了解...
e.g. one is never too old to learn. 活到老，學(xué)到老。
leave[li:v]v. (left, left, leaving)離開(depart, go away, set off)，留下， 使處于（某種狀態(tài)）n.假期
leave for... 出發(fā)前往...
leave ...alone 不管...
leave... behind 遺留..., 超過...
leave ...out 省去..., 遺漏...
ask for leave 請(qǐng)假
e.g. what time does the ship leave?
lecture n./v. 演講(speech, address)，講課
attend a lecture 聽報(bào)告，上課
deliver [give] a lecture 講課，講演
e.g. his long lecture made us yawn.打瞌睡
lend [lend]v. (lent, lent, lending)借給(loan)，貸(款)/ borrow
lend sth to sb 把某物借給某人
lend a hand in... 幫忙..., 參加...
lend itself to... 有助于...
e.g. can you lend me money? no way.
lesson ['lesn]n. (一節(jié))課(class, lecture)，課程，教訓(xùn)(example, moral)
(be) a lesson to sb. 對(duì)某人來說是一個(gè)教訓(xùn)
teach sb. a lesson 教訓(xùn)某人
e.g. his car accident has been a lesson to him to stop driving too fast.
let [let]v. (let, let, letting)允許(allow, permit, agree to)， 讓，出租(rent, lease)
let alone... 更不用說...
let down... 放下..., 使失望...
let... off 放（炮， 煙火等）， 開（槍）
let...out 放掉..., 泄露...
e.g. i let him go home.
letter ['letə] n. 文字，字母，信函
by letter 以書信形式
post a letter 寄一封信
e.g. this word has five letters.
level ['levl] n. 水平，水平面，等級(jí)(grade, standard)adj. 水平的(flat, even，horizontal)
level of living 生活水平
e.g. we must increase production levels.
liberate['libəreit] v. 解放(set free), 釋放(release)
e.g. our army had liberated many occupied占領(lǐng)的 areas.
life [laif] n. 生命，壽命，生活， 生物(creature)
bring...to life 使恢復(fù)，給...以活力
come to life 蘇醒過來
for life(= all one’s life) 一生，終生
life-span 壽命
life belt 安全帶
life condition 生存［生活］條件
lead/live a ...life 過一種...的生活
life style 生活方式
e.g. you'll never see life if you stay at home forever.