Polylactide
聚交酯
🗣️ 情景例句
He is a good speaker of English.
他英语说得非常流利。
The knife is dirty, Would you bring me a clean one, please?
这刀子是脏的，请你拿个干净的给我。
If we could actually see the path described by a particle,such as a sand grain in the rock,
假如我们真能看到的运动轨迹，诸如岩石中一个沙粒分子