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
It's stopped snowing.
雪停了。
No, I only wrote her one letter this year.
是的，今年我才给她写过一封信。
You're not busy doing anything, are you?'
你不忙，是吗？”