这是一种能把水转化为蒸汽，净化空气的装置。

It's a device which can turn the water into moisture and make them cleaner.

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有时空调可能只是冷却空气的装置，然而空调必须做所有三件事：冷却、干燥和循环。

Sometimes we might think of the air conditioner as a device that only cools the air. However, the air conditioner must do all the three: cool, fry and circulate.

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首先，空气的装置-空调总是涉及孔在墙上决策，这无疑使墙体不中看比如果不是眼睛。

To begin with, the installment of the air-conditioner always involves the hole making in the wall, which undoubtedly makes the wall less pleasing to the eye than if not.

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