It is important not to let things get out of perspective.
重要的是不要把事情轻重倒置。
Let us approach the subject from a different direction.
咱们从一个不同的'角度来探讨这个题目吧。
It is important not to let production levels fall.
重要的是别让产量滑落。
Next time you're here let's have lunch together.
下次你到这里来，咱们一起吃午饭。
Please let me know how many are coming, if any.
请告诉我，如果有人要来的话，有多少？