Dentinoid
前期牙本质, 原牙(本)质
🗣️ 情景例句
Yup. I graduated in 1937.
是的，我是一九三七年毕业的。
The shore man is carrying a heavy load.
码头工人在搬运沉重的东西。
The winch was again put into operation and one of the men started up the truck.
绞盘机再次启动，一位工人发动了急修车的引擎。