Linear superpolymer
[机] 线型高聚合物
🧩 词语组成解析
高聚物
🗣️ 情景例句
How long are you going to stay here?
您在这里呆多久？
David would get up early in the morning to deliver newspaper.
戴维一早起床就去送报纸。
You were very angry!
你火气真大！