Plumbocalcite
铅方解石
🗣️ 情景例句
In North America when people meet each other for the first time.
在北美，当人们第一次彼此见面时。
We want to cancel the contract because of your delay in delivery.
由于贵方交货拖延，我方要求取消合同。
Yes, speaking.
是我，请讲。