11???23?????,“???”?????????,????????“??(?????????????)”???????????????????????

“???”?????:????????????????????????????????????????????????????????,???????,????????????????????????“?”?????,???????“???????” ?(?????????????? ????? ??????? ?? ???)

?????????????:??????

“??????”????

?? ?????????“????????”:???????????

????:1???????:??????

2????????

3???????sn

4????????

5??????????

11???23?????,“???”?????????,????????“??(?????????????)”???????????????????????

“???”?????:????????????????????????????????????????????????????????,???????,????????????????????????“?”?????,???????“???????” ?(?????????????? ????? ??????? ?? ???)

?????????????:??????