Chalcomenite
蓝硒铜矿
🗣️ 情景例句
Thanks a lot.
多谢，多谢！
OK.
好的。
My brother has never been abroad before, so he is fending this trip very exciting.
我弟弟以前从未出过国，因此，他觉得这次旅行非常激动人心。