Microimpurity
[化] 微量杂质
🗣️ 情景例句
Does anyone have any complaints?
谁有什么不满意的地方吗？
I know the boy whose father is a scentist.
我知道那个男孩的父亲是科学家。
It seems that there is a big waste pipe coming down from the town. Do you see it, over there?
好象有一条很粗的废水管从镇上通到海里。您看见了吗？在那边？