Predentin
前期牙(本)质, 原牙质
🗣️ 情景例句
Pete Waters's lived around here almost as long as I have. Pete Waters
住在这儿差不多跟我一样久了。
I'm afraid all my efforts were in vain.
我担心我的努力全白费了。
We also want to teach all the children to perform.
我们还想教会所有的儿童演奏。