Polyacetylene
聚乙炔
🗣️ 情景例句
I've got it. Now give me some information about
我知道了。现在告诉我
He may get a grant to study abroad next year.
他明年也许会获得留学奖学金。
At what time can we work out a deal?
我们什么时候洽谈生意？