Polydiolefin
聚二烯烃
🗣️ 情景例句
When can I do that? I'd be happy to.
我什么时候可以去看 我很乐意做这项工作。
I'd like to try on these hats.
我想试试这些帽子。
True and False have opposite meanings.
真与假含义完全相反。