Polycaprolactam
聚已内酰胺, 尼龙-6
🗣️ 情景例句
Philip works late. Philip
工作到很晚。
Teacher. He is teaching.
老师。正在教书。
She gave her luggage to a porter and showed him her ticket.
她把行李交给搬运工并给他看了车票。