ӣţţ  ţţע  ţţֱ  ţţ  ţţ淨  ţţͼ  ţţ½  ţţ  ţţ  ţţ  ţţ淨  ţţ  ţţע  ţţ  ţţ  ţţ  ţţƻ  ţţ  ţţ  ţţ½