You need a change of air.

你需要换换空气。

youdao

The doctor advises a change of air.

医生建议换换空气。

youdao

I needed a change of air.

我需要换一个空气。

youdao

The shape of a snow crystal may change from one form to another as the crystal passes through levels of air with different temperatures.

VOA: special.2010.01.05

While we all know that this is simply not possible (even no-makeup makeup takes work), there is a whiff of change in the air.

WSJ: Tina Gaudoin on Style: Sometimes It's the Little Things

President George W Bush accused him publicly of cheating on the nuclear freeze - by developing a separate uranium enrichment programme - and spoke of North Korea as part of an "axis of Evil" at a time when talk of regime change was much in the air in Washington.

BBC: North Korea: Past lessons will affect the next move

It uses no other motors, and the strength of the grasp is controlled by a change in air pressure, making the hand quite dextrous.

ENGADGET: Robotic hand controlled by compressed air grasps the concept of delicacy