en pas·sant
adverb/ˌɒ̃ ˈpæsɒ̃/
/ˌɑːn pɑːˈsɑːn/
(from French)- while talking about something else and without giving much information
顺便；附带地 - He mentioned en passant that he was going away.
他顺便提到他要离开。
Word Originearly 17th cent.: French, literally ‘in passing’. - He mentioned en passant that he was going away.