Dentinoid
前期牙本质, 原牙(本)质
🗣️ 情景例句
Hi, John, what's going on?
嗨，约翰，你都在做些什么事啊？
He who is ashamed of asking is ashamed of learning.
耻于问者耻于学。
Inevitably the repair job was not quite so simple.
事实上，修理工作远不是那么简单。