ӣţţ  ţţ  ţţƭ  ţţ  ţţ½  ţţ  ţţ  ţţͼ  ţţ½  ţţ  ţţ  ţţ  ţţô  ţţֱ  ţţ  ţţ  ţţ½  ţţ  ţţע