cavity
noun
ˈkævɪəti
noun
1
a
hole
or
space
inside
something
[正式] 腔，洞，窟窿
Put
herbs
inside
the
body
cavity
of
the
fish.
把香草放进鱼肚里。
I
have
no
cavities
(=no
holes
in
my
teeth)
.
我没有龋齿洞。