each crab is smaller than the one before —each one is worse than the last ? 這頓飯的幾道菜怎么～？ How come that each of the dishes at this dinner is worse than the last?
一蟹不如一蟹yi xie bu ru yi xie
each crab is smaller than the one before—each one is worse than the last
一蟹不如一蟹yī xiè bù rú yī xiè
比喻一個不如一個。each one is worse than the last, take a turn for the worth