Altaite
碲铅矿
🗣️ 情景例句
Yes, I think that's what we stipulated.
对呀，我想那是我们所订定的。
It's a pencil.
那是一枝铅笔。
For our purposes, we are concerned only with one kind of cost----
就我们的目的而言，我们只关心一种费用-