Polycaprolactam
聚已内酰胺, 尼龙-6
🗣️ 情景例句
Hi. What can I do for you?
嗨 。我能帮你吗？
Books,like friends,should be few and well chosen.
书籍如朋友，宜少宜精选。
The curious thing was that the lake was not marked on the map.
奇怪的是那个湖没有在地图上标出。