?????12????????????????22???????????? ???“??????????????????????????”??????????,??,?,?????????????,??(???????)?????21?????????,???

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

????:“??????????????,???????????????????‘???????????????’,?????????”(??????) ??????????????????????:??????? “????????????”????

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

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

2???sn??

3???????

4????????py

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

?????12????????????????22???????????? ???“??????????????????????????”??????????,??,?,?????????????,??(???????)?????21?????????,???

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

????:“??????????????,???????????????????‘???????????????’,?????????”(??????) ??????????????????????:???????