Refrax
金刚砂砖, 碳化硅耐火材料
🗣️ 情景例句
We promise. Can we pay for our imports in RMB?
我们答应。请问，我们能否用人民币付款？
I wrote several letters on my mother's behalf.
我代表我母亲写了几封信。
I grew a beard during the trip.but I shaved it off when I came home.
我在旅行时留了胡子，但我回到家时就把它刮了。