Barytin
[医] 重晶石(不纯硫酸钡的矿石)
🗣️ 情景例句
Mike and I had a hamburger this afternoon, and we talked.
今天下午 Mike和我一起吃汉堡， 一起讨论。
How many boxes are you going to use?
你要用几盒？
It doesn't matter.
没关系。