Polymerisate
聚合产物
🗣️ 情景例句
I have spent the last five years working specifically in this field.
过去五年我专门在这个领域里工作。
The early bird catches the worm.
捷足先登。
No, it isn't. I think it's her eraser.
不，不是我的。我想那是她的橡皮擦。