cavity/ˈkæv.ə.t̬i/名词空隙;洞;腔The gold was hidden in a secret cavity.金子藏在一个隐秘的洞穴里。(身体内的)腔the upper nasal cavity鼻腔上部(牙齿上的)龋洞,蛀牙洞The dentist found a cavity in my tooth during the check-up.牙医在我的检查中发现了我牙齿上的龋洞。想跟读,去练习