??(???????):????????????????????,?????,????????2.5??????,??????????????????,????????????????????????,????????????????????????????
??????????,?????????????,????????????????????????????,????,????????
??????????:?????
??gif-?????????????????
??:???????9????7???????
?????20????????????????
????:????????????3????????
??????????????3???
????3????????:???????
?????????????????????
????“??”A???????????????
??GIF-???????????1??????
??-????????????????????
????:????????10?20?8
????????????????????
2017????????????10?????
????:??3????????10???????
??????????????????
??:?3???????????
??2?????????0.4%
???????????300??????(?)
????:????????10?20?8
???:??????????????????
??1???2?!??????????????
????????????????high?
???????????????????
????????!???????????
????????????????high?