let in

1.His misconduct let in a host of troubles.

他的不端行为招致不少麻烦。

2.I didn't know what I was letting myself in for.

不知道自己会卷入什么样的麻烦之中。

3.I hope you realize what you're letting yourself in for!

希望你意识到你给自己揽了多大的麻烦!

4.I fear for the city with this madman let loose in it.

让这位精神病患者出自由活动，真为这座城市担心。

5.I hope you've let none of your belongings in the hotel.

希望你什么东西也没忘旅馆里。

6.Father open the window to let in the briskness of the morning air.

父亲打开窗户让早晨的清新空气进。

7.A bowman can let off six aimed shots in a minute, an arquebusier only one in two or three minutes, when he has gone through all his manual exercise carefully.

一名弓箭手可以每分钟瞄准射击六次，而一名火绳枪手只能每两三分钟射击一次，这他严格按照程序操作的情况下!