fall from someone's lips
US /fɑːl frəm ˈsʌm.wʌnz lɪps/
UK /fɑːl frəm ˈsʌm.wʌnz lɪps/

1.
从口中说出, 被说出
to be spoken by someone, often unintentionally or in a particular manner
:
•
A harsh word never fell from her lips.
一句狠话从未从她口中说出。
•
Every word that fell from his lips was a lie.
他口中说出的每一个字都是谎言。