介绍:
let down 使失望
I really let my mother down when I got such a bad grade in math class.
当我数学成绩那么差的时候，我真是让我妈妈失望了。
I'm sorry I let you down. 对不起，我让你失望了。
The movie really let me down. 那部电影太让我失望了。
let in 让…进入
I forgot my keys, so you'll have to let me in when I get home tonight.
我忘了带钥匙了，所以今天晚上我回家时你得给我开门。
let up 停止，减少
When the rain let up, I was finally able to go home.
雨停了，我终于可以回家了。
let up on 减少压力
Let up on the work a little. You're ahead of schedule.
工作放慢点，你比计划提前了。
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