Polycaprolactam
聚已内酰胺, 尼龙-6
🗣️ 情景例句
Aren't you a little scared?
难道你不会感到有点紧张吗？
Excuse me to give you so much trouble.
对不起给你带来这么多麻烦。
In the pioneering days, however, this was not the case at all.
然而，在登山运动的初期，全然不是这种情况。