Polynonanoylamide
[化] 聚壬酰胺; 尼龙-9
🗣️ 情景例句
I'm really glad to see you.
非常高兴见到 。
A good book is a best friend who never turns his back upon us.
一本好书，莫逆之交。
I think we can do that.
那我想没问题。