利于的英文：
be beneficial
be good for

参考例句：

A buffet meal is more sociable, enabling you to circulate freely.
自助餐使你能自由走动，这更有利于与人交往。

The cost reduction achieved in this way will benefit patients and the society in burden alleviation.
集中招标采购降低的采购成本要让利于患者，减轻社会负担。

The pen is mightier than the sword.
笔利于剑

Things have gone badly with him.
事情结果都不利于他。

Cheerfulness is the best promoter of health. -- Thomas Alva Addison
快乐最利于健康。--爱迪生

Our independent foreign policy helps greatly to preserve world peace.
我们这种独立自主的外交政策，最有利于世界和平。

This is conducive to the sustainable development of global and regional economies.
这有利于世界和地区经济的可持续发展。

Please try to adopt a greener life style.
尽量采取更有利于环境保护的生活方式。

This misbehavior will go against his chance of promotion
这一错误行为将不利于他提升的机会。

Such foolish behaviour will not benefit your case.
这种愚蠢的行为将不利于你的案子。

beneficial是什么意思：
adj. 有益的；有利的；有帮助的；受益的

Some of this filtering is beneficial.
这种过滤有些是有益的。

The change is beneficial in some ways but not in others.
这些变革有的方面有好处,有的方面没好处。

A stay in the country will be beneficial to his health.
乡村生活有利于他的健康。

The fall in prices will be beneficial to small business.
物价下跌将对小企业有利。

International trade is beneficial for all participants.
国际贸易对所有参加国都有好处。

good是什么意思：
adj. 好的；令人满意的；愉快的；仁慈的
n. 好处；利益；有道德的人或事
adv. 好

A good appetite is a good sauce
饥不择食

The prompt goods have good qualities.
当场付款的物品质量不错。

Be not simply good; be good for something.
不要单纯做个好人，还要做个能派上用场的人。

Have a good mind
很想…

Good gracious, no!
天哪，不！