Wittite
硫硒铅铋矿
🗣️ 情景例句
I don't think I have a mathemationcal brain.
我想我没有数学头脑。
Yes,it's mine.
是，是我的。
He wanted to buy a $300 watch for his wife,
他走进一家高级商店，要为妻子买一块价值300英镑的手表。