Poly(hexamethylene adipamide)
[化] 聚己二酰己二胺; 尼龙-66
🗣️ 情景例句
She has the ability to speak English fluently.
她能够流利地说英语。
The statue is no longer standing here.
那做铜像已经不竖在这里了。
Who is he?
他是谁？