Invaginations
(invagination 的复数) n. 入鞘, 凹入, 反折, 反折处, 凹入部分, 肠套叠\\n[医] 折入, 凹入, 内陷, 套迭
🗣️ 情景例句
Wait! Don't hang up!
等等， 别挂断电话！
Tom's been feeling blue ever since his divorce.
自离婚以来，汤姆一直很忧郁。
Can you ring up the bus company?
你能给汽车公司打个电话吗？