Replacement bone
[医] 软骨成骨
🧩 词语组成解析
bone
[bon]
n. 骨头;尸骨;骨质物;有…样的骨头的;
vt. 挑鱼刺，剔骨头;剔去…的骨;
vi. 苦学;专心致志;
🗣️ 情景例句
have become good friends, haven't you?
成了好朋友，不是吗？
It's easy for me!
这简单！
Then, when it's open, we fight about who plays with it first.
然后，当礼物打开后，我们又争着谁先来玩。