have a cavity
通常指牙齿的龋洞。
I need to see a dentist because I have a cavity.
我需要看牙医，因为我有一个蛀洞。
龋洞；蛀牙洞
洞；孔；凹处；腔；室；地洞；深坑；固体中的孔洞或凹陷；大洞(通常在地面上)
A hole or soft decayed area in a tooth, caused by tooth decay (caries).
固体中的孔洞或凹陷
A hole or hollow depression in a solid object.
大洞(通常在地面上)
a sizeable hole (usually in the ground)
龋病引起的牙齿上的洞,常伴有周围软化区域
A small or large hole in a tooth caused by caries; often also a soft area adjacent to the hole also affected by caries.
被包围的空间
space that is surrounded by something
牙齿的软腐区域；继续腐烂可导致牙齿死亡
soft decayed area in a tooth; progressive decay can lead to the death of a tooth
The dentist found a small cavity in my back molar.
牙医在我的后磨牙上发现了一个小蛀洞。
用法提示：此处 cavity 指牙齿上的蛀洞。
Drinking too much soda can lead to cavities if you don't brush regularly.
如果你不经常刷牙，喝太多苏打水会导致蛀牙。
用法提示：此处 cavities 是 cavity 的复数形式，指多处蛀牙。
She had to get a filling because the cavity had reached the nerve.
她不得不补牙，因为蛀洞已经触及神经。
用法提示：此处 cavity 指牙齿上因龋齿形成的空洞。
通常指牙齿的龋洞。
I need to see a dentist because I have a cavity.
我需要看牙医，因为我有一个蛀洞。
用于解剖学，指体内的空腔。
The nasal cavity is lined with mucous membranes.
鼻腔内衬有黏膜。
指地下的洞穴或空洞。
A large cavity in the ground was formed by the explosion.
爆炸在地面形成一个大洞。
grammar · medium
易错句子I have cavity.
正确表达I have a cavity.
cavity是可数名词，单数形式前必须加冠词a，否则不符合英语语法。
grammar · medium
易错句子I have a cavity on my tooth.
正确表达I have a cavity in my tooth.
表示牙齿上的龋洞，正确介词是in，表示在牙齿内部，而不是on表示表面。
与‘cavity’的‘洞’义相反，指凸出的地形
与‘cavity’的‘洞’义相反，指凸起的土堆
与‘cavity’的‘空腔’义相反，指实心的团块
与‘cavity’的‘洞’义相反，指向外突出的部分
与‘cavity’的‘空腔’义相反，指连续的实体
腹腔
The surgeon made an incision to access the abdominal cavity.
外科医生切开一个口子以进入腹腔。
鼻腔
The nasal cavity is lined with mucous membrane.
鼻腔内衬有黏膜。
口腔
Dentists examine the entire oral cavity for signs of disease.
牙医检查整个口腔以寻找疾病迹象。
蛀牙洞
Brushing regularly helps prevent tooth cavities.
定期刷牙有助于预防蛀牙洞。
空心墙
Cavity walls provide better insulation for the building.
空心墙为建筑提供更好的隔热效果。
补牙洞
The dentist recommended a cavity filling to restore the tooth.
牙医建议补牙洞以修复牙齿。
cav- (中空的) + -ity (名词后缀)
cav- (中空的) + -e (词尾)
Dictionary facts from ECDICT, OCTANOVE, WIKTIONARY.