Polyamide
[化] 聚酰胺
🗣️ 情景例句
I'm Elsa Tobin. How do you do?
我叫Elsa Tobin ，你好。
Is meat packing a big industry in your country?
肉制品包装在你的国家是大产业吗？
The guards couldn't have been watchig very carefully.
警卫不可能一直认真地查看。