Thicknesses
n. 层( thickness的复数形式 ); 浓度; 厚（度）; 最厚的部分
🗣️ 情景例句
Freezing, isn't it?
好冷啊！
Be my guest.
别客气。
The need to produce ever-increasing quantities of cheap food leads to a different kind of pollution.
日益增长的对廉价食物的需求导致了另一种形式的污染。