???????????????????????,??????????????????????????,???,??????????????????????????????????????????????????????????????
???,???????????????,??????????
???????????,??19??,????“???”,?????????????????,??,???????????????????“???”,????????????????????????????????????????????,????,???,??????????,???
(???? ?????? ???? ??????????????:??????? ???:????)
???????????:????????
??2?????????0.4%
?????????:??????“????”
4?1?!??????????????????!
???????????????????
???????«????»????????????
?????!???????????
????????????????3???
??GIF-???????????1??????
???:??????????????????
????1???????????
???????22?????:3??????????
????:3???????????????
??:????“???”?????????
??????????????:??????
??gif-?????????????1-1??
??gif-?????????????1-1??
??????????????:??????
????:????????????????
?????????????????????
??gif-?????????????????
????:??3????????10???????
«????»:?????,??????
????:?????????????????
????????????????high?
????:3???????????????