Biopolymers
(biopolymer 的复数) [化] 生物聚合物; 生物高分子
🗣️ 情景例句
How fast can my mail be received?
我的信件多快会被收到？
Nothing for nothing and very little for a half penny.
一分钱，一分货。
This time, the policeman lost his temper.
这一次警察火了。