Impurities
n. 杂质（impurity的复数）
🗣️ 情景例句
Study hard and study everyday, if you want to master the English language.
如果你想精通英语的话，就得每天刻苦学习。
All good things came to an end.
天下无不散之宴席。
We'll send a man right out to look at it.
我们马上会派个人去查看。