ӣţţƭ  ţţ  ţţ½  ţţ淨  ţţƭ  ţţô  ţţͼ  ţţע  ţţƭ  ţţ½  ţţ  ţţ  ţţ  ţţ  ţţ淨  ţţע  ţţֱ  ţţ  ţţƽ̨  ţţ½