Macromolecules
[医]大分子
🗣️ 情景例句
I'll have the chef's salad, please.
我要主厨沙拉。
No, he doesn't.
不，他没有。
Imagine a pen attached to the weight in such a way that its point rests upon a piece of paper on the floor.
假定把一支笔拴在重物上，笔尖落在地板上的一张纸上，