?????????? ??????????????
?????????10????,???????????
?????????,??,????????????8.2?,??????1?????????????????,??0.7????????????3.9????7.9?????13??????????;?????????????????,????????????????,?????????????????,??????????????????1????????????
?????????,“??????????????,?????????”????????????????????,??????????????,????????!
??????????,??????????,??,?20??????,21??????????????????????20???????,????????,21??22?,?22??????????20?,??????????,???,???????????????
??,?????????????????,?????????????80????,???????,???????“?????????”????????????????,?????????“???”??,???????????????????,??“??”??????????????12???????????2???0.5????????,??,???
??????,?:????,???????????????,????????????????,23???????????,??????????????,?????????,24-27????????,????8~12??????14~16???????????,???????????,?????
??????????,????,???????????,??????????????,?????????????????????????,???????
???????????23???????????,????,???????,???????,??,????????
??:?????
??