They want to make the air clean.

他们想要使空气变得干净。

youdao

They want to stop the sand on windy days and make the air clean.

他们想在有风的日子阻止沙子，并使空气清洁。

youdao

But kind people want to protect the environment and make the air clean.

但是善良人们想要保卫环境和使空气变得干净。

youdao

Just the same as the Forest Trees that clean the air and make Oxygen we breath and all living on earth need to Live.

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High petrol prices and the desire to clean up our air quality make them the smart choice.

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