Sootfall
n. (工业区的)煤烟降落(量)
🗣️ 情景例句
A rolling stone gathers no moss.
滚石不生苔，转业不聚财。
No garden without its weeds.
有利必有弊。
Let me see. Oh dear! Yes, it is broken.
让我看看，天哪！是坏了。