Polytelite
银铅, 黝铜矿
🗣️ 情景例句
before the guests arrive.
在客人到达之前。
We'd like to clear up some points connected with the technical part of the contract.
我们希望搞清楚有关合同中技术方面的几个问题。
I have something to tell you.
我有事要告诉你。