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