Dipolymer
[化] 二元共聚物
🗣️ 情景例句
Is the tip included in the bill?
账单里包括小费吗？
Cheerfulness and goodwill make labour light.
欢快与好意，劳动不觉累。
we can start any time you're ready.
只要你准备好了，我们随时可以开始。