ӣţţ  ţţֱ  ţţ淨  ţţ  ţţ  ţţ  ţţ  ţţ淨  ţţ  ţţ½  ţţ  ţţ½  ţţ  ţţ  ţţƽ̨  ţţ  ţţע  ţţ  ţţͼ  ţţ