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

2?????????????

3??????????

4???????

5????????

??????????????????2?????????????????19???????(??????????????)????????????19???,“??=?=????????”??????????“????=??????????”“????=????=??”????????????????????,???????????????

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

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

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

???????????,“????=??=??????????”??,?????,????????,???“?????????????”,???????????????????????????,?????????(??)

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