Polycrase
(=polycrasite)[矿]复稀金矿, 锗铀钇矿石
🗣️ 情景例句
Since you don't have enough income,
由于你们的收入不够
It takes a bit of nerve to cross these chain bridges.
过这种铁锁桥需要有点胆量才行。
No necessity of making a living away from home results in neglect of children,
人们没有必要离家谋生，所以不会产生孩子无人管的问题，