n.洞;空穴;腔;蛀洞
I have a toothache because there is a cavity in one of my teeth. 我牙疼,因為我的一顆牙齒上有個洞。
He jammed the material in until the cavity was full. 他用力把材料塞進去,直到空穴完全填滿。
The peritoneal cavity is a closed sac. 腹膜腔是一個封閉的囊腔。
The tumor growing in the enteric cavity blocked excretion of food. 腫瘤在腸腔里生長阻礙了食物排泄。
The dentist carefully located the filling in the cavity. 牙醫(yī)小心地把填塞的東西放入牙洞里。
雙凹面