in private

私下，秘密

in no case, in no time, in no way, in one's early (late 20's), in one's honour, in one's mind's eye, in one's way, in one's way/in the way, in order, in order that, in order to, in other words, in part, in particular, in person, in place, in place of, in point of, in power, in practice, in proportion (to), in proportion to, in public, in pursuit of, in quantity, in question, in reality, in regard to, in relation to, in respect that, in return, in return for, in school, in search of, in season, in secret, in sequence, in series, in session, in shape,