Could I sleep on it and let you know tomorrow?

　　能不能讓我晚上考慮考慮，明天答復你？

　　Keep down! You mustn't let anyone see you.

　　蹲下！一定不要讓人看見(jiàn)你。

　　Let's hope everything will go according to plan.

　　但愿一切都會(huì )按計劃進(jìn)行。

　　Turn around and let me look at your back.

　　轉過(guò)身去讓我看看你的后背。

　　Let's do it another time.

　　咱們其他時(shí)間再辦這件事吧。

　　Don't let this go further than these four walls.

　　走出屋外這事就不要再談了。