Vuagnatite
n. [矿]羟硅铝钙石
🗣️ 情景例句
Well, I've got an appointment at the hospital.
好啦， 我在医院有事。
Know something like the palm of one's hand.
熟知其事，了如指掌。
He's our office assistant.
是我们办公室的勤杂人员。