Cavity
01
腔, 龋齿
a hole in a tooth that is caused by decay
例子
The dentist found a small cavity on her molar during the routine checkup.
牙医在例行检查中在她的臼齿上发现了一个小蛀洞。
He felt sharp sensitivity when drinking cold water and worried it might be a cavity.
他喝冷水时感到尖锐的敏感，并担心可能是蛀牙。
02
腔, 空洞
a natural empty space or hollow area inside the body
例子
Air passes through the nasal cavity when breathing.
呼吸时空气通过鼻腔腔。
The heart sits inside a chest cavity.
心脏位于胸腔腔内。
