Backdrafts
n. 倒转（回程）；反向气流
🗣️ 情景例句
I waited for you for about a quarter of an hour.
我等了你差不多一刻钟。
Why does only one sock get lost at a time?
为什么袜子只丢了一只呢？
Goodbye. Good luck!
再见。祝你好运！