cavity

名词 cavity:

1. a sizeable hole (usually in the ground)
   同义词：pit
2. space that is surrounded by something
   同义词：enclosed space
3. soft decayed area in a tooth; progressive decay can lead to the death of a tooth
   同义词：caries, dental caries, tooth decay
4. (anatomy) a natural hollow or sinus within the body
   同义词：bodily cavity, cavum

1. An abnormal duct or passage resulting from injury, disease, or a congenital disorder that connects an abscess, a cavity, or a hollow organ to the body surface or to another hollow organ.
   瘘，瘘管由于受伤、疾病或先天性变形引起的把脓肿、腔洞或空器官同身体或其它空器官连结起来的病变的通道
2. A cavity in a solid.
   洞固体上的洞
3. A cavity or hollowed surface, especially of a bone.
   腔尤指骨头的腔或凹陷的表面
4. I have a toothache because there is a cavity in one of my teeth.
   我牙疼，因为我的一颗牙齿上有个洞。