Polynonanoylamide
[化] 聚壬酰胺; 尼龙-9
🗣️ 情景例句
Well, it's small, but clean.
噢， 它是小了点， 但是干净。
All bags contain an inner waterproof lining.
所有包内都有一层防水内衬。
She sang perfectly in the hall last night.
她昨晚在大厅唱得非常好。