Polyset
聚酯树脂
🗣️ 情景例句
What does John do?
John现在做什么事？
In the crowd, Sam looked aside to avoid seeing her.
在人潮中，萨姆把头转向旁边，免得和她目光相对。
It will be by special invitation only.
我们只邀请特别的客户