Chileite
砷钒铅铜矿
🗣️ 情景例句
Please give my best regards to your sister.
请向你妹妹转达我最诚挚的问候。
The demand for our products has kept rising.
要求定购我们产品的人越来越多。
It's cheaper, isn't it?
这更便宜些，是吗？