Conichalcite
砷钙铜矿
🗣️ 情景例句
I guess you know what's best for the family and for me.
我猜想你们一定知道怎样做对整个家庭和我是最有利的。
This is a bill.
这是一张账单。
We need to make some changes in this contract.
这份契约有几个地方需要修改。