Bismuthinite
辉铋矿
🗣️ 情景例句
Your English is very good.
你的英语说得很好。
Could I have your latest catalogues or something that tells me about your company?
可以给我一些贵公司最近的商品价格目录表或者一些有关说明资料吗？
Have your mechanics finished yet?
你们的机械师修好了吗？