Predentin
前期牙(本)质, 原牙质
🗣️ 情景例句
and leave the number with the baby-sitter.
把餐厅的电话告诉临时保姆。
I think it's going to be too dry.
我认为天气将会太干。
Each day is a holiday,and ordinary holidays, when they come,
每天都是假日，而通常的假期到来时，