Vistanex
聚异丁烯, 聚丁烯合成橡胶[纤维]
🗣️ 情景例句
He always seems such a happy guy.
他似乎永远是个快乐的人。
A good heart conquers ill fortune.
善心克厄运。
I don't know. I haven't made up my mind yet.
不知道。我还没下定决心呢。