Polysulfide
[化] 多硫化物\\n[医] 多硫化物
🗣️ 情景例句
You think you've got what?
你想你已经拍齐了什么？
Archeologists still can only surmise as to the origin of Man.
考古学家们对于人类的起源依然无法推测。
When will we hear something from him?
什么时候会有消息呢？