这应该有助于:
// Set the URL of the second movie
var url:String = "url_of_your_second_movie"
// Create the loader object using the specified URL
var loader:Loader=new Loader();
var request:URLRequest;
request= new URLRequest(url);
// Set the COMPLETE event handler
loader.contentLoaderInfo.addEventListener(Event.COMPLETE, onComplete );
// Start the load
loader.load( request );
// Fill the COMPLETE event handler as needed
private function onComplete(e:Event):void
{
// Add the loaded content to the display list
addChild(e.currentTarget.content);
// Do whatever else is needed once the movie is completed
}