Impurities
n. 杂质（impurity的复数）
🗣️ 情景例句
A downpour like this never lasts long here at this time of year.
这里每年这个时间象这样的大雨不会下得很久的。
Does it take long to get into Taibei from here?
从此地去台北要很久吗？
Dressed in dark glasses and old clothes, they had taken special precautions so that no one should recognize them.
他们戴着墨镜，穿着旧衣裳，特别小心以防别人认出他们。