Umbilicus
n. 脐, 中心\\n[医] 脐
📖 牛津释义
umbilicus
n
(anatomy 解) navel 脐.
🗣️ 情景例句
She is giving me piano lessons in exchange for her English classes.
我教她英语，她教我弹钢琴。
A word spoken is an arrow let fly.
一言既出，驷马难追。
'No', I answered confidently.
“没有。”我自信地回答说。