en passant
adverb formal uk/ˌɒ̃ ˈpæs.ɒ̃/ us/ˌɑ̃ː pæsˈɑ̃ː/
顺便提到
French for 'in passing': if you say something en passant, you mention it quickly while talking about something else.
She mentioned, en passant, that she'd been in L.A. the previous week. 她顺便提到此前一周她在洛杉矶。