Botallackite
羟氯铜矿
🗣️ 情景例句
Of course.
当然。
And to stay ahead of the competition is to openly and freely exchange our opinions.
处于竞争领先地位的方法就是公开、自由交换我们的想法
One day a letter from my father arrived at the school, asking for a teacher for me.
有一天，我父亲的信寄到学校，请求为我聘用一名教师。