?? (??????)?:??“??”???? ?????
????:1??????????:??????????
2??????v
3???????
4??????????
5??????????
?????????????????1??3???????????????? (???? ?)????,????,??????????,????,??????????????
“??,????????,?????”???,????????????????,??10???????
???????,??????????????? ????????,??100?????,?????????50?????????,?????????“?????????”,???????????????????????????????????,??????????????,??????,????????????????????????
?????????????????,??????????????????,?,?????55??????????:“??????????????????,??????????????3??????,?,???????????????,??”
???????,???????????????……????????????,????????????????,??????,??,?????????,???????????,????????“??”?????????????(??????????????????????)
???:?????????