drop in at sp.顺便走访某地Could I drop in at your house after the concert?音乐会完了后,我顺便去拜访您行吗?drop in on sb.顺便拜访某人I”ll drop in on the old man next week.我下个星期会顺便去拜访那位老人的。
call ondropped in pay a visit
drop in Drop by
drop indrop in on sb.