Polymerisate
聚合产物
🗣️ 情景例句
There aren't window seats left, but a few enter seats are open.
那些靠窗的位子已没有了，但里面的位子还有。
How old do you have to be to vote in the national elections?
你要多大才能在大选中投票？
So it's not serious, doctor?
那么说，医生，这病并没有什么大不了的？