Polycaprolactam
聚已内酰胺, 尼龙-6
🗣️ 情景例句
Use your head.
动动你的大脑。
From across the room, David cast a glance at his brother.
隔着房间，大卫瞥了一下弟弟。
She usually wears that round her middle when she goes out.
她外出时总是把它系在腰上。