Poly(tetramethylene adipamide)
[化] 聚己二酰丁二胺; 尼龙-46
🗣️ 情景例句
Fine. We were just wondering about this trunk.
好啦。我们正纳闷这只大衣箱呢。
First try, and then trust.
试了才能相信。
No, I'm English.
不，是英国人。