吃太多糖会导致牙齿产生蛀牙。

Eating too much sugar can cause ___cavities in your teeth.

这块奶酪有很多小孔洞。

This piece of cheese has many small ___cavities in it.

医生用X光检查了他的胸腔是否有异常。

The doctor used X-ray to check for any abnormalities in his chest ___cavity.