把所有声音链接类名命名为sound1、sound2、sound3....................、 var soundArr:Array = ["sound1","sound2","sound3"]; var soundId:uint = Math.floor(Math.random()*soundArr.length) var soundClass:Class = Class(getDefinitionByName(soundArr[soundId])); var mySound:Sound = new soundClass(); var channel:SoundChannel = mySound.play();