家常便饭（家常便飯）　

◎ 家常便饭 jiācháng-biànfàn

(1) [potluck;ordinary meal;simple fare;homely food]∶接待客人,未作准备的普通膳食或一顿饭

(2) [daily diet;all in a day‘s work;bread and cheese;common occurence;daily lot;routine]∶比喻经常发生司空见惯的事

笑在眉头,歌在喉头,盛会好景,差不多是家常便饭。——叶圣陶《微波》