Calcoblast
钙质细胞, 造骨片细胞
🗣️ 情景例句
to hear about your wife having passed away.
听到你太太去世的消息。
I wonder if the dentist could fit me in early tomorrow?
请问明天一早牙科医生能抽空给我看一下吗？
I'm reading a book.
我在读书。