空

这个盒子里是空的，什么都没有。

This box is empty. There's nothing inside.

地铁里有很多空座位，你坐吧。

There are many empty seats on the metro. Have a seat.

请在写名字之前空出两个字的位置。

Please leave space for two characters before writing your name.

我最近很忙，实在空不出时间来帮你。

I've been very busy lately and really can't free up any time to help you.

我们不能在家里空等，应该出去找他。

We can't just wait at home in vain. We should go out and look for him.

他空忙了一整天，什么事也没做好。

He worked all day for nothing and didn't get anything done.

楼上的房间一直空着，没有人住。

The rooms upstairs have been vacant, with nobody occupying them.

楼后面有一块空地，孩子们常在那里玩。

There is a vacant lot behind the building where children often play.

你什么时候有空？我们一起去吃个饭吧。

When are you free? Let's have a meal together.

我今天晚上没空，明天再去你家找你。

I'm not free tonight. I'll come to your place tomorrow instead.