Prodentin
前牙质, 前齿质
🗣️ 情景例句
I am, Mom.
我确实感到骄傲， 妈妈。
Business may be troublesome, but idleness is pernicious.
事业虽扰烦，懒惰更害人。
There's another tiger in the forest.
这林子里还有另外一只老虎。