Area must be well ventilated.

区必须有足够的通风。

youdao

These fungus gardens must be well ventilated, and their temperature andhumidity closely controlled - no mean feat in the tropical climates in which termites live.

而这些菌圃必须通风良好，恒温恒湿，如此苛刻的生长环境对于地处热带气候的白蚁族群来说可是个不小的考验。

youdao

It must be used in a well-ventilated room. Used otherwise it could be harmful.

必须在通风条件好的房间里使用。如不这样使用则可能是有害的。

youdao

And if you put this in the well-ventilated area, if you prepare this outside, the h c n gas will actually be released into the air, so you're safe, you can eat it later.

而如果你把它们放在通风良好的地方，在室外处理，那么氰化氢气体,将会被释放到空气中，这样你就安全了，过后就可以吃了。

麻省理工公开课 - 化学原理课程节选