on the sly (ān de sī lái)

Idiom Secrets

含义

secretly; in a sneaky way

秘密地; 以狡猾的方式 (mìmì de; yǐ jiǎohuá de fāngshì)

例句

"He met her on the sly without telling anyone."

"他秘密地见到她,没告诉任何人。" (Tā **mìmì de** jiàndào tā, méi gàosù rènhé rén.)