He slept badly at night and couldn't concentrate in class at daytime.

If you don't concentrate more on your work you'll be dismissed.

假如你不更加专心地工作,你将被解雇.

When working, one should concentrate and not allow oneself to be distracted.

工作时要集中精力,不要分心.

Concentrate your mind on study. Don't look around.

专心学习, 别东张西望的.

Young children have a limited attention span and can't concentrate on one activity for very long.

小孩子的注意力持续时间十分有限，不能长时间地专注于一个活动。

I am leaving to concentrate on writing fiction.

我辞职是为了专心写小说。

He wants his ministers to concentrate on implementing policy, not on drawing it up.

他希望部长们把注意力放在政策的执行上，而不是政策的制定上。

Water companies should concentrate on reducing waste instead of building new reservoirs.

自来水公司应该集中精力减少水浪费，而不是修建新水库。

It was up to him to concentrate on his studies and make something of himself.

是否能专心学习并取得一定成就要靠他自己。

They should concentrate on rejuvenating the existing vegetation, like grass and shrubs.

他们应该侧重于修整现有的绿化植被，比如草和灌木。

He found it hard to concentrate on conversation so far removed from his present preoccupations.

他发现很难专注于谈话，因为谈话内容和自己目前的当务之急毫不相干。

We should concentrate on sharply reducing interest rates to pull the economy out of recession.

我们应该着力大幅下调利率以使经济走出衰退。

After the fun he's had during the holidays, the boy can't concentrate on his school work.

放了几天假, 这孩子的心都玩野了.

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

开车时注意力应集中在路上.

You should concentrate on your work.

你应该专心于你的工作.

But when they feel tired and bored, students can't concentrate on studies.

但是当学生疲倦腻烦时, 就不能集中精神学习.

Thus, they can concentrate on schoolwork and their families.

因此, 他们可以更专注于学校的学业和家庭生活.

Tired, sleepy, boring and weakness and fatigue and rest to concentrate on it!

累了, 困了, 没劲了,乏力了,疲劳了,专心地休息吧!

We insist that only professional, to concentrate on in order to enable customers peace of mind.

我们坚持只有专业 、 专心才能使客户安心.

I can't concentrate on any work.

不能集中精力工作.

Back at home, I keep thinking of that boy; I cant concentrate on my teachers lecture.

在家, 我一直想着那个男孩, 所以无法专心在功课上.