Office buildings with recirculated air can get stuffy and stale.

有再循环通风系统的写字楼可能会空气不好。

youdao

Fluid entering the by-pass line is recirculated through the pump.

进入旁通管线的液体通过泵循环。

youdao

Air that is recirculated throughout the cabin is most often blamed.

最常遭到诟病的是空气在机舱内的循环流动。

youdao

Chang's said roughly 1 million people clicked, recirculated or otherwise interacted with the Twitter ad.

WSJ: Twitter's Mobile Ads Begin to Click

The recirculated air usually passes through high-efficiency particulate (HEPA) filters before delivery into the cabin.

CNN: Commentary: Flu and your health on a plane

To minimize the risk of disease spread by aircraft, regulations requiring HEPA filters for any aircraft that uses recirculated air should be seriously considered.

CNN: Commentary: Flu and your health on a plane