ӣţţ  ţţ  ţţ½  ţţͼ  ţţ淨  ţţô  ţţ  ţţô  ţţ  ţţ  ţţ  ţţƻ  ţţ  ţţ  ţţ  ţţע  ţţ  ţţ淨  ţţ  ţţ  ţţ  ţţƽ̨  ţţƻ  ţţ  ţţ  ţţ½  ţţ½  ţţ  ţţͼ  ţţƻ