spare time

I employ my spare time in reading.

我利用空闲时间看书。

He reviews articles in his spare time.

他业余时间写评论文章。

Because is not each people all can on the operating post, puts out the spare time to be engaged in the calligraphy art devotionally.

因为不是每个都能作岗位上，拿出业余时间专心从事书法艺术的。