Urotropin
一种白色结晶, 用作绘画或雕塑表面涂料的硬化剂
🗣️ 情景例句
I just took the wrong train.
只是我坐错了车。
I tried several times to call, but there is no answer.
我打了几次，但是没有人回答。
Are you married or single?
你结婚了吗？