Wind is a current of air caused by a vacuum caused by hot air rising.

风是由热空气上升产生真空而引起的空气流动。

《柯林斯英汉双解大词典》

A cold current of air came in when the window was open.

窗户一打开，进来一股冷空气。

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To expel a current of air, AS from the mouth or from a bellows.

从嘴或风箱中往外送气。

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But he says, it's because of current wind patterns that the volcano is having such a major affect on European air travel.

VOA: standard.2010.04.16

The sudden current of air was powerful enough to blow tiles and masonry from the home of Patricia Hills in Old Windsor, Berkshire.

BBC: Vortex from plane landing at Heathrow damages roof

"A current of moving air moves a weak little old mosquito far and wide, " he said.

CNN: Spring wedding, backyard disaster

The Hailstorm II pairs an advanced liquid cooling system with a blustery current of cold air driven by three front intake fans and a large rear exhaust fan.

ENGADGET: Digital Storm's Hailstorm II relieves you of gaming PC claustrophobia, $2,760 cash