????“??”?:??????“??????????????????”??????3.9????????????????“???????????????”,????????????????,“???”???,???“??????????????”?

??????????????,???????«?(?????)»??????????????????????????

2??????21?????,????,???“??”“????????????????”????????,“???????”?????,????????????????50?,????????????????????????????????????????????,?????????????3.9???????????????(???? ????????????? ??? ??)

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

“??????????”_????

?? 3.9????“???”??????? ??????????“??”

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

2????????

3???????

4?????

5????????

????“??”?:??????“??????????????????”??????3.9????????????????“???????????????”,????????????????,“???”???,???“??????????????”?

??????????????,???????«?(?????)»??????????????????????????

2??????21?????,????,???“??”“????????????????”????????,“???????”?????,????????????????50?,????????????????????????????????????????????,?????????????3.9???????????????(???? ????????????? ??? ??)

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