one's lips  are  sealed
<i>one's</i>
wʌnz
vanz
lips
lɪps
lips
are
ɑ:
aa
sealed
si:ld
sild

英語での「one's lips are sealed」の定義と意味

one's lips are sealed
01

used when one says that one will not reveal secret information 

慣用句
くだけた
I told him not to say anything, and he said his lips are sealed, so hopefully he'll be able to keep a secret this time. 
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