?? ??????? ?????????????
????:1??????????:??????????
2?????????????
3????????
4???????????
5???90???????
???????????8??????????????????5???????? ???,??????2?????,??,???????????????
?(CNN)?????????,????????,?????????????????????,??,??“?15?20???????????????????(4.5??????6.1??)???????????????????????????”???,??????
?????????,?????????????,???????????????,???????????
???,2000??2021??,?28??????????????479??????????? ????:????????????????????