It is important not to let things get out of perspective.

　　重要的是不要把事情輕重倒置。

　　Let us approach the subject from a different direction.

　　咱們從一個(gè)不同的角度來探討這個(gè)題目吧。

　　It is important not to let production levels fall.

　　重要的是別讓產(chǎn)量滑落。

　　Next time you're here let's have lunch together.

　　下次你到這里來，咱們一起吃午飯。

　　Please let me know how many are coming, if any.

　　請告訴我，如果有人要來的話，有多少？