Sootfall
n. (工业区的)煤烟降落(量)
🗣️ 情景例句
What's going on?
你在忙些什么？
It is good to be merry at meal.
席间心情愉快是为上策。
You don't have many apples, Jim, says Li Lei.
“你的苹果不多，吉姆，”李垒说