Poly(hexamethylene sebacamide)
[化] 聚癸二酰己二胺; 尼龙-610
🗣️ 情景例句
I majored in economic and trade English.
我主修的是经贸英语。
Could you explain how to fill this out?
请你说明一下怎样填这张表好吗？
One evening, however, the lamb was missing.
可是，一天晚上，那只小羔羊失踪了。