He is very conscientious in the performance of his duties.

他非常认真地履行职责。

He is a conscientious man and knows his job.

他很认真负责, 也很懂行。

Conscientiously, absorbedly work in a planned order way pursue the perfection.

做事认真、专注，有计划、有条理，追求完美。

She acquired a knowledge of the English by careful study.

她认真学习精通英语。

Her purposeful stare showed she meant business.

从她坚定的眼神可知她是认真的。

He washes the floor religiously every morning.

他认真坚持地每洗擦地板。

He carefully read the proceedings from last meeting.

他认真阅读了上次会议的记录。

She pondered his marriage proposal for weeks.

几个星以来她认真地考虑着他的求婚。

He was praised for his neat and careful work.

他因工作认真、利到赞扬。

He was fired when he loafed on the job.

他因工作不认真被开除。

The government has yet to get to grips with the problem of homelessness.

政府还需认真处理无家可归的人的问题。

Buying a house is a serious matter.

买房是一件需要认真考虑的事。

The problem was gone carefully into by the engineers.

工程师们认真地研究了这个问题。

There is no need to take her little boutades seriously.

没有必要去认真对待她的种种怪念头。

They’ve been dallying with the idea for years.

他们多年来一直有这个想法,但从没有认真考虑过。

You may laugh but I’m in deadly earnest.

你可以笑，但我绝对是认真的。

Robert is a very earnest young man; you can trust him.

"罗伯特是个十分认真的年轻人,你可以信赖他。"

I'm not playing games—this is for real!.

我并非在闹着玩——我是认真的！。

She went through the typescript carefully to eliminate all errors from it.

她认真地检查了打字稿, 从排除所有的错误。

She has a frivolous nature and won't take anything seriously.

"她生性轻浮,什么事情都不肯认真对待。"