??????????,????????????,?????????????“????”???????????????????,???,????,???

??,????????,???,??????,???(??????????? ?? ??????????????????????? ???????????????????????????????? ?????????????????????)

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

“???????”????

?? ????:??????“??”???? ??

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

2???????

3?????v

4???????

5????????????

??????????,????????????,?????????????“????”???????????????????,???,????,???

??,????????,???,??????,???(??????????? ?? ??????????????????????? ???????????????????????????????? ?????????????????????)

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