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- Cavities in teeth are caused by decay .
- The peritoneal cavity is a potential space .
- The peritoneal cavity is a closed sac .
- This reduced body cavity is called a hemocoel .
- The cavity is usually evacuated .
- (anatomy) a natural hollow or sinus within the body
同义词：bodily cavity, cavum
- a sizeable hole (usually in the ground); "they dug a pit to bury the body"
- soft decayed area in a tooth; progressive decay can lead to the death of a tooth
同义词：caries, dental caries, tooth decay
- space that is surrounded by something