套

这个沙发的套有点脏了，我准备拿下来洗洗。

The cover on this sofa is a little dirty, so I’m going to take it off and wash it.

进这个房间以前，请先把鞋套穿好。

Please put on the shoe covers before entering this room.

天气冷了，你最好在外面套一件厚外套。

It's getting cold, so you'd better put a thick coat on over your clothes.

垃圾桶里已经套好了一个干净的塑料袋。

A clean plastic bag has already been fitted inside the rubbish bin.

我们在学校附近租了一套两室的房子。

We rented a two-bedroom flat near the school.

这套书一共五本，我已经全部看完了。

This set of books contains five volumes, and I've read them all.