Pit cavity
[医] 点龋
🧩 词语组成解析
pit
[pit]
n. 井;煤矿;麻子;（赛车道旁的）修理加油站;
vt. 使有麻子;使有凹陷;
vi. 凹陷;起凹点;
🗣️ 情景例句
He is in conference right now.
他现在在开会。
May I use your telephone?
我能用你的电话吗？
The bison skins were sent by rail to cities to be sold.
野牛皮用火车运到城里出售。