Ceruleite
块砷铝铜矿
🗣️ 情景例句
People don't ask unmarried people Why are you single?.
人们不会问未婚的人“你为什么不结婚？”。
What is known to three is known to everybody.
一件事情三个人知道就人人知道。
No, I don't.
不知道。