It is pleasant to live in a clean environment.

生活在干净的环境中是一件非常让人快乐的事情。

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His task was to elaborate policies that would make a market economy compatible with a clean environment.

他的任务是周密地制定能够让市场经济适合于无污染的环境的政策。

《柯林斯英汉双解大词典》

Organizers say another aim of the walk is to recruit members of different faiths to join forces in community service projects to clean the environment and help the poor.

VOA: standard.2009.10.19

Earlier Friday, BP's incoming CEO Bob Dudley, said it is time to scale down the vast operation to clean up the Gulf of Mexico oil spill, but he stressed his company's commitment to fully restore the environment.

VOA: standard.2010.07.31

We all want good jobs, good schools, health care, safe streets, a clean environment.

CNN: Clinton: Time again to choose a more perfect union

He will do right on behalf of the American consumers for a clean environment and affordable reliable energy.

CNN: Gore to unveil plan to lower gas prices

The mice at NYU live in a super-clean environment, and those imported from other labs carry a risk of contamination.

WSJ: Scientists focus on another Sandy loss _ lab mice