Backdrafts
n. 倒转（回程）；反向气流
🗣️ 情景例句
Don't speak too soon.
话不要说得太早。
It's not my fault!
又不是我的错！
and the profits from the exhibition were used to build museums and colleges.
博览会的赢利用来建造博物馆和高等学校。