Paratacamite
副氯铜矿
🗣️ 情景例句
No admittance except on business.
非公莫入。
Kill the goose that laid the golden egg.
杀鸡取蛋
of a change of atmosphere, of a diversion of effort, is essential.
改变一下气氛，转移一下注意力，这是不可缺少的。