?? ????16???“???”???????
????:1???????????:???????vx
2?????
3???????
4?????????
5???????
?1??????4?? (??? ?????? ??????????????)??4??,???????16??????????????,???????“?”,??,???????????????
?????????16???????????????“?????????????”??? ????? ???????????????????,?????“????”???????,???????,????,??????????
???16?????????? ??? ???????,???????“???”??“??????”,???????????,??????????????????????????,????????????“??”,???(????????)
????????????:??