Osteoplast
成骨细胞
🗣️ 情景例句
We are going upstairs to set up Grandpa's room.
我们要上楼收拾一下爷爷的房间。
The many children of that family used to play together for hours.
那一家的孩子们常常大伙一起玩上几个小时。
I don't know, she says.
她说“我不知道”。