Central caries
[医] 中心性骨疽
🧩 词语组成解析
🗣️ 情景例句
It was an extremely difficult and dangerous task.
这是一项极度困难的危险的工作。
How lucky we are!
我们多么幸运啊！
But there was something wrong with the child.
但是，这孩子有点毛病。