6???16????,??????,????????????(????????“????”)????,??????????

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

??:??

??“????”

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

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

2????????vx

3??????????

4?????

5??????

6???16????,??????,????????????(????????“????”)????,??????????

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

??:??