Impurities
n. 杂质（impurity的复数）
🗣️ 情景例句
It seems so simple now.
现在事情显得很简单了。
Would you please leave the door unlocked for me?
可以请你为我把门锁打开吗？
Don't you think we should add a sentence here like this?
难道你不觉得我们应该在这儿加上一句话？