Chalcomenite
蓝硒铜矿
🗣️ 情景例句
Birds are good pets, they can wake you up by singing in the morning.
鸟是很好的宠物，它们早上的歌声可以将你从梦中唤醒。
It's very nice of you to come and see me off.
您来给我送行，真是太客气了。
Primarily, the banker-customer relationship is that of debtor and creditor----
银行与储户的关系主要是债务人和债权人的关系。