Predentin
前期牙(本)质, 原牙质
🗣️ 情景例句
the plans for the community center
这项修建社区中心的计划
Thanks.
谢谢。
He started to complain about this wicked world but was interrupted by a knock at the door.
他开始抱怨起这个邪恶的世道来，却被一阵敲门声打断了。