Polytetramethylene pimelamide
[化] 聚亚丁基庚二酰胺; 聚庚二酰丁二胺
🗣️ 情景例句
Mr. Marker and his wife have invited me to a Christmas dinner.
马克先生和他妻子邀请我吃圣诞晚宴。
It's up to us to help those in need.
我们有责任帮助那些有困难的人。
That's all right.Goodbye.Enjoy yourself!
不用谢。再见。好好玩吧！