What is "trick or treat"

What is trick or treat what is the trick? What is Trick and Treat? Trick or treat what it will be trick or trick trick or trick or What is your favorite magic trick? What do trick or treat come from?kuai what are the three steps to''trick or treating''that one must carry out to obtain candy?For Helloween,kids like to go out to gather candy from their neighbors.This is known astrick or treating. treat or trick还是trick or treat 翻译句子“Is he a trick or treat?” 提示：trick or treat的意思是“不给糖就捣乱” 英文Trick or trick or treat 翻译Trick or treat Trick or Treat trick or treat是什么意思 go trick-or -treating