Polybutyrolactam
[化] 聚丁内酰胺; 尼龙-4
🗣️ 情景例句
Where can I find the information desk?
咨询台在哪儿？
How far is it to the university?
它离大学多远？
I have two cats. One is white, the other is black.
我有两只猫，一只是白猫，另一只是黑猫。