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

2???????

3???????

4?????vx

5??????

?????2???15??????????????(????)?????????????(???????“????????”),?????????????,????,???????????“????”????14??????

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

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

????,????“??”???“??”,?????????????????????????,????????????????????????«???????????????????????????»«?????????»«?????????????????»??????????????????????????300?????

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

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

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

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