Polyoctamethylene adipamide
[化] 聚亚辛基己二酰胺; 聚己二酰辛二胺
🧩 词语组成解析
[化] 己二酰二胺
🗣️ 情景例句
What are you up to?
你呢？你怎样？
She's free on Friday and Saturday.
她周五和周六有空。
Were you in San Francisco at the time of the big earthquake in 1989?
1989年旧金山大地震时，你在那儿吗？