?????2???12???????(?? ???????????????????????)12??,???“????????????????”:?????????“?????????????”??????????????;???“????????”?????????????????????????????……

??(????????????)

??“??????”????????????,??“?”?

??“??”???(???)

??,???12??????12???,“?????????????”???????????????????“??”??????????????????????“??”????????????“???????”,??????????,?????????“???????”????????????????,??“?????????????????”??????,??“??”??“?????????????????”,????

??(??)

??????,?????“??”??;??????3??,“?”????????????(??)

???:??? “??????”_????

?? ???? ????????????“?”?????

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

2???????

3?????vx

4???????

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

?????2???12???????(?? ???????????????????????)12??,???“????????????????”:?????????“?????????????”??????????????;???“????????”?????????????????????????????……

??(????????????)

??“??????”????????????,??“?”?

??“??”???(???)

??,???12??????12???,“?????????????”???????????????????“??”??????????????????????“??”????????????“???????”,??????????,?????????“???????”????????????????,??“?????????????????”??????,??“??”??“?????????????????”,????

??(??)

??????,?????“??”??;??????3??,“?”????????????(??)

???:???