ӣţţ½  ţţƻ  ţţ  ţţ½  ţţ  ţţֱ  ţţ  ţţ¼  ţţע  ţţע  ţţͼ  ţţ½  ţţƽ̨  ţţ  ţţ  ţţ  ţţô  ţţƻ  ţţ  ţţ