In its place are niggling doubts about whether the recovery can be sustained.

取而代之是对经济复苏能否持续质疑。

Even his fans would not say that Mr Davies's forte is details; some niggling errors deserve speedy correction.

戴粉丝并不认为新书特点在于资料详细。书中一些小错应该及时更正，因为著书过程中再所难免有些笔。

And then there's a niggling problem with the cooker ... Ah ha ... The door's broken.

然后电饭锅出了点小问题… … 啊哈… … 门坏了。

You can do it twice a day and if you feel any niggling injuries coming on, foam rollers are a fantastic place to start.

你可以一天做两次，如果你觉得可能会有小伤出现，泡沫轴是一个很好开始。