Refrax
金刚砂砖, 碳化硅耐火材料
🗣️ 情景例句
Everyone is expected to stick to the rules.
每个人都要遵守规则。
A ready way to lose friend is to lend him money.
失友都因借钱起。
The man said that the pen was worth $50,
那人说那支笔值50英镑，