ӣţţͼ  ţţƻ  ţţ  ţţע  ţţ淨  ţţ  ţţƻ  ţţ  ţţע  ţţ½  ţţô  ţţƻƽ̨  ţţ  ţţ  ţţ  ţţ½  ţţ  ţţ  ţţ  ţţ