ӣţţ  ţţֱ  ţţ淨  ţţ  ţţ淨  ţţ  ţţ  ţţͼ  ţţ  ţţ¼  ţţ  ţţ  ţţƻ  ţţ  ţţֱ  ţţ  ţţƻƽ̨  ţţ  ţţ½  ţţ