Predentin
前期牙(本)质, 原牙质
🗣️ 情景例句
Please come and see me in my office on the 20th floor.
请到二十楼我的办公室来见我。
What time did you get to work yesterday morning?
你昨天早上什么时间上班？
You should then establish your own individual aims.
然后，你一定要建立起自己的目标。