1、a change of pace 节奏变换
　　
You can’t do these chemistryexperiments all day long. You certainly need a change of pace.
　　
2、 a far cry from 相距甚远
　　
The published book is far cry from the early manuscript.
　　
3、 and how 的确
　　
A: She’s a good dancer.
　　
B: and how.
　　
4、 a matter of time 时间问题
　　
It is only a matter of time.
　　
5、 a phone call away 一个电话之远、愿意过来帮忙。
　　
If you need my help, do let me know. Just remember I am a phone call away.