Spodiosite
氟磷钙石
🗣️ 情景例句
... and if you ask what I care about, I'll tell you.
……假如你们问我关心什么， 我可以告诉你们。
That's a tough question to answer.
那是一个很难回答的问题。
and should never be added to drinking water.
永远不能掺入饮用水。