rotten apple片語KK [ˋrɑtən ˋæpəl] /ˈɹɑtən ˈæpəl/發音片語1害群之馬、敗類A few rotten apples have damaged the whole department's reputation.少數幾個害群之馬毀了整個部門的名聲。2壞蛋、壞人口語He turned out to be a rotten apple who cheated his own friends.結果他是個連朋友都騙的壞蛋。