Poly(tetramethylene adipamide)
[化] 聚己二酰丁二胺; 尼龙-46
🗣️ 情景例句
That sounds fantastic. Where do I go to sign up for that tour?
那听起来好极了。我到哪里去报名参加呢？
Would you mind mailing this letter for me?
你能替我寄这封信吗？
Though he is young, he knows a lot.
尽管小，他懂得多。