Fluorapatite
[医] 氟磷灰石
🗣️ 情景例句
Are you all right?
你还好吗？
Buck up, Billy, Enjoy yourself.
振作起来，比利，快快活活地过日子。
Our clavichord is kept in the living room.
我们的这架古钢琴存放在起居室里。