??????????9??23?????????????????????????? ??9?????????23????,???????????,??????????????

?,?????????????????????????,??????,??,??

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

?????????:?? “???????”_????

?? ?????????????

????:1????????:????sn????

2???????

3?????200????????

4?????????

5????????

??????????9??23?????????????????????????? ??9?????????23????,???????????,??????????????

?,?????????????????????????,??????,??,??

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

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