Protosulphide
硫化亚..., 低硫化物
🗣️ 情景例句
Good-bye. Take care of yourself.
多多保重，再见。
You must be hungry. Shall we get something to eat?
你一定饿了，我们吃点东西好吗？
We need seven of these.
我们要七个这种的。