Poly(hexamethylene adipamide)
[化] 聚己二酰己二胺; 尼龙-66
🗣️ 情景例句
Hobbies are supposed to be relaxing.
业余爱好应该是令人放松的。
What platform does the train leave from?
这班车从哪个站台开出呢？
She put away her compact and smiled kindly.
她放好了粉盒，慈祥地微笑着。