1，a change of pace 节奏变换
You can’ do these chemistry experiments 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.