concentrate是什么意思？

I do not think that we spend nearly enough time trying to concentrate on achieving a sort of calmness, a sort of contentment in a mental and spiritual way, which was identified by these people as the highest form of happiness and pleasure.

Concentrate on food while eating.

It can keep the mind active, prevent getting bored and help to concentrate.

One of the most effective ways to concentrate is to write things down.

Although calls to share data often concentrate on the moral advantages of sharing, the practice is not purely altruistic ( ' , 利他的).

One boy said, I'd rather be concentrating on artistic efforts than saving the world or something.

It renders us unable to concentrate.

But while much of the research and innovation has concentrated on finding less-polluting energy alternatives, it may be decades before clean technologies like wind and solar meet a significant portion of our energy needs.

As for the drawbacks of illegal immigration, these, too, are concentrated.

Doctor, I haven't been able to get enough sleep lately, and I'm too tired to concentrate in class.

Although calls to share data often concentrate on the moral advantages of sharing, the practice is not purely altruistic.