有利於用英語怎麼表達

例句：

You need people working for the benefit of the community.

你需要一些爲公衆利益服務的人。

People would benefit greatly from a pollution-free vehicle.

人們將極大地受益於無污染汽車。

There would be some benefit, however indirect, to the state.

國家會得到一些利益，不管有多少。