ㄉㄞˋdàiㄅㄨˋㄖㄨˊㄉㄞˋdài

  1. 年輕一輩不如一輩形容事物情況紅樓夢·》:誰知鐘鳴鼎食翰墨詩書如今兒孫一代不如一代。」一蟹不如一蟹

to be getting worse with each generation