ӣţţ¼  ţţ  ţţ  ţţ½  ţţ¼  ţţ  ţţ  ţţ  ţţ½  ţţ  ţţ淨  ţţ  ţţͼ  ţţ  ţţע  ţţ  ţţƽ̨  ţţô  ţţ  ţţ½