navelKK [ˈnevəl] ｜ /ˈneɪvəl/
GEPT 中高級
C2noun
the scar left by the removal of the umbilical cord at birth
She showed off her tattoo, which was strategically placed just above her navel
肚臍
C2noun
the central point or middle of something
The navel of the city is always bustling with activity.
中心點；核心