let somebody down  使人失望
A: I  trust  you  will  win  in the match． Don't let me down.
我相信你会赢得比赛。不要让我失望。
B: Trust me, I won＇t．
相信我，我不会（让你失望）。

let go 死心
A: I know she doesn＇t love me any more, but I just can't let go.
我知道她不再爱我，可是我不甘心。
B: Come on, you've got to face the reality.
得了吧，你要面对现实。

let me put．．．(in) this way 让我这样说好了
A: What do you think about her?
你觉得她怎样？
B: She  is the most sophisticated girl I＇ve ever seen. Let me put it in this way: you never know what she is thinking.
她是我所见过的最有城府的女孩子，让我这样说好了：你永远不会知道她在想什么。

let me through 让我过去
A: You can＇t enter this room．
你不可进入这房间。
B: Let me through． I want to speak to the Councillor.
让我过去。我要跟议员说句话。

let＇s get down to business (let＇s talk business) 咱们谈正事吧
A: It＇s late now． Let＇s get down to business.
时候不早了，我们谈正事吧！
B: Okay． What do you want?
好，你想怎样？

let＇s go 走吧
A: It＇s five o＇clock now． Let＇s go．
现在五点了，走吧！
B: Okay．
好。

let＇s go for a ride 让我们兜风去
A: I＇ve just bought a new car． Let＇s go for a ride.
我刚买了一辆新车，让我们兜风去。
B: I＇m sorry, but I＇ve got to finish my assignment first.
对不起，我先要做完功课。

let＇s take a vote 让我们投票
A: Let＇s see a horror movie．
咱们看恐怖电影去吧。
B: I think a comic movie is better．
我想喜剧电影更好。
C: Since you don＇t agree with each other, let's take a vote.
既然你们意见不一，我们投票表决吧。

like father, like son 有其父必有其子
A: John is a miser．
约翰是个吝啬鬼。
B: Of course, like father like son．
当然啦，有其父必有其子。

like hell I will 我才不会呢
A: I guess you will date Mary tonight．
我想今晚你会约玛莉。
B: Like hell I will．
我才不会呢！

like what 例如什么
A: Unless he returns the money to me by Friday, I will teach him a lesson.
除非他在星期五前还钱给我，否则我会教训他一顿。
B: Like that?
例如——
A: Like beat him up．
例如揍他一顿。

line up 排队
A: There are so many people outside． Tell them to line up.
这么多人在外面。叫他们排队。
B: Yes, sir．
是，长官。

loan shark 放高利贷的人
A: There＇s a piece of news about the loan sharks again.
又有一条有关高利贷者的新闻。
B: It tells us never to borrow money from them.
它告诉我们永远不要向他们借钱。

the long arm of the law 天网恢恢，疏而不漏
A: The murderer was finally caught．
那个谋杀犯最后被捕了。
B: No one can escape the long arm of the law.
法网恢恢，疏而不漏。

long face 臭脸
A: What＇s  wrong  with  the boss? He is wearing a long face today.
老板怎么了？他整天拉长着一张臭脸。
B: I don＇t know． Perhaps he was scolded by his wife last night.
不知道。或许他昨晚被妻子骂了一顿吧。

long time no see 好久不见
A: Hello, Peter, long time no see． How are things?
哈啰，彼得，好久不见了，近来怎样？
B: Oh, nothing could be worse．
噢，糟透了。

look what you did （to．．．） 瞧你干的好事
A: Look what you did to my car． The windscreen was broken!
瞧你干的好事，我车子的挡风玻璃破了！
B: I＇m sorry． I＇ll pay for it．
对不起，我会赔偿的。

lose one＇s touch 失去准头
A: What＇s wrong with him today? Yesterday he scored 40 points alone.
他今天怎么了？昨天他独得40分。
B: He must have lost his touch．
他一定失去了准头。

lose one＇s voice 声音沙哑
A: Don＇t shout too loud． You＇ll lose your voice.
不要大声叫嚷，你会变得声音沙哑的。
B: I won＇t． Don＇t worry．
不会的，放心。

lousy 身体不舒服；差透了
A: What＇s wrong with you?
你怎么了？
B: I＇m feeling lousy． I won＇t go to school today.
我觉得身体不舒服，我今天不上学了。

A: How was your test?
你的测验成绩怎样？
B: Lousy．
糟透了。