Algodonite
微晶砷铜矿
🗣️ 情景例句
Happiness is a personal choice.
快乐是个人的选择。
I'm twenty-two (years old).
我二十二了。
The negotiations on the rights and obligations of the parties under contract turned out to be very successful.
就合同保方的权利和义务方面的谈判非常成功。