兔 tu4 兔
死 si3 死
狗 gou3 狗
烹 peng1 烹
  1. lit. to boil the hound once it caught the rabbit (idiom)
  2. fig. to get rid of sb once he has served his purpose

Examples

俗話說：滴水之恩當湧泉相報！可俗話又說：過河拆橋、卸磨殺驢、兔死狗烹、鳥盡弓藏！

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