Cylindrite
n. [矿]圆柱锡石(由铅、锑和锡的硫化物组成的圆柱形黑灰色矿物,产于玻利维亚)
🗣️ 情景例句
I guess we must.
我想咱们是该开始了。
You must have enjoyed yourself.
你一定玩的很开心。
The conditions of society are such that skills have to be paid for in the same way that goods are paid for at a shop.
社会上的情况就是如此，技术是必须付钱去买的，就像在商店里要花钱买商品一样。