Impurities
n. 杂质（impurity的复数）
🗣️ 情景例句
I can't express myself very well in English.
我用英语表达不好。
Absent-minded
心不在焉
There would be pictures in magazines and newspapers, showing crowds of peope with their cameras and noisy, excited talk.
报纸和杂志将刊登出图片，报纸和杂志将刊登出图片，展示那些带着照相机熙熙攘攘蜂涌而至的人群。