ㄏㄨㄟˊhuíㄊㄧㄢtiānㄈㄚˊㄕㄨˋshù

  1. 比喻無法挽救嚴重情勢病情醫生趕到回天乏術無法救治。」無法復生

unable to turn around a hopeless situation (idiom)​, to fail to save the situation