他呼出的水汽悬浮在他面前的空气中。

His breath was hanging in the air before him.

《柯林斯英汉双解大词典》

管子里的特殊材料保存了每次呼出的东西。

Special materials in the tubes kept the things of each breath.

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宇航员呼出的二氧化碳被吸走了。

The CO2 that astronauts breathe out is sucked away.

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But it can be acquired in the air, from patients that are from- from other individuals that are infected.

天花会通过空气传播,通过病人和其他感染者呼出的空气传播

耶鲁公开课 - 生物医学工程探索课程节选