He cannot concentrate in such clamour.

他无法在这样的喧嚣中集中注意力。

It is difficult to concentrate in noise.

在噪音中集中注意力很难。

He finds it hard to concentrate in the noise.

他发现很难在噪音中集中。

Sometimes it's hard to concentrate in a noisy environment.

有时在嘈杂的环境中很难集中注意力。

She found it hard to concentrate in unfamiliar surroundings.

在陌生的环境里，她发现很难集中注意力。

He forgot his earplug and couldn't concentrate in the library.

他忘了带耳塞，在图书馆里无法集中注意力。

I guess with fewer places to inhabit, they concentrate in greater numbers in few areas.

我猜，由于可居住的地方越来越少，它们就会集中在少数几个地区。

These groups concentrate in the inner cities.

这些人集中在内地城市.

The frozen concentrate in cans is really good.

罐装冰冻橘汁好极了!

Most accounting personnel concentrate in the financial department.

大部分的会计人员都是集中在财务部门的。