??
??2????????8?????(???? ????)???,??8?????????,???????-17.8???????????????-4.6?,??????????????????????,???35??????2????????????
8??,????????????????????89?,??????????????57???????,??,???????5???????????????,???1?,“??”?????????
?“???”,?,???????????,???????,?,??????,?????????????,?????????,?????0???????????,???????2?,????68??
??????????,??8???-4.6????????????????????2????-4.6??????,??????1990???2?1???????(-6.2?)?
??,??????????8?????,?,????????????9??-3?????????????????-5?,?,?????-6???-8?,?????10????????,?????????-1????-3?,???????????,???-4??-7?,???(????) ?????:???
?????????
????????-17.8? ????????2???35?????????????????