讲解：
concern (about / for / over sth / sb) | ~ (that...)
(尤指许多人共同的)担心,忧虑:
There is growing concern about violence on television.
人们对电视上充斥暴力内容的忧虑日益加重。

method (of sth / of doing sth) | ~ (for sth / for doing sth)
方法；办法；措施:
We have the best method for arriving at an accurate prediction of the costs.
我们有准确预测成本的最佳方法。

mind sth
I don't mind the cold—it's the rain I don't like.
冷我不在乎,我是讨厌下雨。

expert (at / in / on sth) | ~ (at / in / on doing sth)
专家；行家；能手:
He's an expert at getting his own way.
他在如何达到自己的目的方面很在行。

install sb (as sth)
(常以正式仪式)使就职,任命:
He was installed as President last May.
他于去年五月份正式就任总统。

room (for sb / sth) | ~ (to do sth)
空间；余地:
Is there enough room for me in the car?
车上还有我的位置吗？