ӣţţ  ţţ¼  ţţ  ţţô  ţţ½  ţţ  ţţ  ţţ  ţţ½  ţţƽ̨  ţţƭ  ţţ  ţţ½  ţţô  ţţ  ţţ  ţţ  ţţͼ  ţţ  ţţ