concentrat 用英语:

He concentrated his attention on what she said.

He concentrated on that.

I concentrated my attention on the subject.

I concentrated on what he was saying.

I concentrated all my energies on the problem.

I concentrated my effort on the study.

He concentrated his energies on helping his friend.

The student concentrated on his subject.

I bought a tin of concentrated milk from the supermarket.

Cream is a white and light yellow liquid composed of concentrated proteins and fat.

Taro concentrated on memorizing English words.

The biologist concentrated on observing the phenomenon.

The general concentrated the soldiers in Paris.

I concentrated my attention on the little things of history.