HalloweenOnOctober31st,dozensofchildrendressedincostumes(节日服装)knockontheirneighbors'doorsandyell"TrickorTreat"whenthedooropens
Piratesandprincesses,ghostsandpopularheroesofthedayallholdbagsopentocatchthecandyorothergoodiesthattheneighborsdropin
Astheygiveeachchildatreattheneighborsexclaimoverthecostumesandtrytoguesswhoisunderthemasks
Sincethe800'sNovember1stisareligiousholidayknownasAllSaints'Day(万圣节)
TheMassthatwassaidonthisdaywascalledAllhallowmas
TheeveningbeforebecameknownasAllHakkiwe'en,orHalloween
LikesomeotherAmericancelebrations,itsoriginslieinbothpre-ChristianandChristiancustoms
October31stwastheeveoftheCeltic(凯尔特人的)newyear
TheCeltsweretheancestorsofthepresent-dayIrish,WelshandScottishpeople
Onthisdayghostswalkedandmingledwiththeliving,orsotheCeltsthought
Thetownspeoplebakedfoodal