但根据我的经验，用这样的方法来挤出空余的30分钟并不管用。

But in my experience, using such methods to free up the odd 30 minutes doesn't work.

我在空余的屋子安顿下来

Installed myself in the spare room.

你现在有空余的时间吗？

Do you have any spare time (right now)?

你现在有空余的时间吗？

Do you happen to have any spare time (right now)?

学生在他们空余时间做功课。

Students do their homework in their free time.

他把空余时间都花在学习上。

He spends his free time studying.

用珍珠条将槽尾空余处填充。

Fill void with epe sheeting.

你们8月中旬有空余的房间吗？

Do you have any rooms free in the middle of August?

不管你是否有一个空余的房间或者整个空余的房子，总有人会想要租它。

Whether you have a spare bedroom or a whole spare house, there are people who want to rent it.

他谈笑风生，消磨无聊的空余时间。

He talks and laughs away his vacant hours.