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??,???8??????????????????????-4.6??????????2???????-4.6????????????,??????1990???2???????????1???????(-6.2?)?

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8?????????????,?89???,?????????????57?????,????,???5?????,??1?,“????????”????

?“??????????”,?????,?,?????,??,??,?????????????,????,????0???????????,????2?????????,?68??

??,???8??????????????????????-4.6??????????2???????-4.6????????????,??????1990???2???????????1???????(-6.2?)?

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