ӣţţƽ̨  ţţô  ţţ  ţţ淨  ţţƻ  ţţô  ţţ  ţţô  ţţ½  ţţ  ţţע  ţţ¼  ţţֱ  ţţ  ţţô  ţţ  ţţ½  ţţ  ţţ  ţţ