A good book can be satisfying, can improve your knowledge and can teach you a lot.

一本好书可以令人满意，可以提高你的知识，可以教你很多。

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It could be better to improve the public service or cut the price of energy use in daily life.

改善公共服务质量或者是降低日常生活中的能源使用价格可能会更好。

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As soon as relations improve they will be allowed to go.

关系一改善他们就会获准离开。

《柯林斯英汉双解大词典》

In general,dead or living parts of plants need to be removed to improve the shape or growth of the plant.

VOA: special.2009.07.14

Then you could also think about whether there are changes that could be made to improve diet.

然后,你也可以想想是能否做些改变,来改善食谱

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

so if somebody wants to spend the money to improve their appearance then so be it .

所以，如果有人要花钱改善自己的形象，那就让他们那么做吧。

整容是个人自由 - SpeakingMax英语口语达人

The study will be called Improve It, short for Improved Reduction of Outcomes: Vytorin Efficacy International Trial.

FORBES: Merck, Schering Launch Huge Heart-Drug Test

This means the only updates and bug fixes these products will get will be to improve security.

BBC: Downgrade plan for Windows 7 PCs

One senior military official says General Alexander's priority will be to improve the defences of military networks.

ECONOMIST: Are the mouse and keyboard the new weapons of conflict?