短语词组短语bad bad apple 烂苹果a bad apple 坏蛋;一个坏苹果;惹麻烦;害群之马bad apple bad apple 烂苹果BAD APPLE WARS 坏苹果战争Synthesia Piano Bad Apple 坏苹果Bad Apple Effect 坏苹果效应bad apple theory 烂苹果理论league of bad apple 坏苹果联盟 返回 bad apple