改良的英文：
improve

To improve the quality of(livestock)by crossbreeding with purebred stock.
改良品种与纯种家畜杂交来改良(家畜)品质

Naively idealistic in the support of philanthropic or humanitarian causes.
社会改良空想家的在支持善心或博爱事件方面幼稚的、理想化的。

The description covered in this instruction manual is subject to change for improvement of the commodity without notice.
本使用说明书中的规格因改良而发生变更，请订货时确认。

A naive idealist who supports philanthropic or humanitarian causes or reforms.
社会改良空想家幼稚的理想主义者，支持善心或博爱的事件的改革者。

Polish up; shine;improve on
擦亮;改良

He was zealous for improvement.
他热心于改良。

The car is very much improved.
那部车已改良了很多。

He advocates reforming the prison system.
他主张改良监狱制度。

The production process has since been refined.
生产工序得到了改良。

Refine earlier systems,designs,theories
改良原先的制度、设计、理论.

There is still room for improvement.
还有改进的余地。

Technical advances improve productivity.
技术进步提高生产力。

Her service has improved.
她的发球有了提高。

This can be improved by the addition of an adjuvant.
这可以从增效剂上加以改进。

We hope to effect an improvement.
我们希望能引起改进。