一、详细释义：


n.

浓缩，精选；浓缩物


例句：

It's fish protein concentrate.

这是鱼蛋白浓缩物。


例句：

Using these techniques, wastewater is split into a desalted dilute and a salt concentrate.

利用这些技术，废水被分离成脱盐的稀释液和盐浓缩液。


v.

集中；聚集 [I,T]


例句：

He wanted to concentrate on a single issue.

他要集中在单一的问题上。


例句：

The rioters concentrated at the main square of the town.

骚乱者聚集在镇内主要广场上。


全神贯注，专心于 [I,T]


例句：

You'll solve the problem if you concentrate on it.

如果你全神贯注，你会解决这问题。


例句：

Having failed my French exams, I decided to concentrate on science subjects.

我因法语考试不及格而决心专攻理科。


浓缩，提纯；精选，富集 [I,T]


例句：

An acid solution is concentrated when it has very much acid in it.

当酸性溶液里含有很多酸时，它就被浓缩了。


例句：

How are metals concentrated?

金属是怎样富集的？


二、词义辨析：


concentrate,focus

这两个动词均有“集中，聚集”之意。 concentrate指把人或物集中在一起，也可指把精力或注意力集中于某一事物上。 focus侧重指把光、热、射线等集中于一点，也可指把思想或精力等集中于某人或某事情上。


三、相关短语：


concentrate on

v. 集中，全神贯注于


四、参考例句：


I must concentrate on my work now.

我现在必须集中精力做好我的工作。


I must concentrate on my new task.

我必须专注于我的新任务。


We must concentrate our attention on efficiency.

我们必须把注意力集中在效率上。


I couldn't concentrate on my work.

我无法集中精力工作。


Adrian was finding it difficult to concentrate.


You should concentrate on the road when you're driving.

开车时注意力应集中在路上。


The group plans to concentrate on six core businesses.

该集团打算主营6种业务。


Wouldn't it be better to concentrate on unmanned flights?

把精力集中于无人飞行是否更好？


It’s too hot to concentrate on book.

热得不能集中心思看书。


He wanted to concentrate on a single issue.

他要集中在单一的问题上。