第7章（第2页）

请退出浏览器阅读模式，否则将导致章节内容缺失及无法阅读下一章。

???????????ˉ?o???ˉ??′è§????

è?a?·±?????′???è???¨±???????§??|1???????????1????2?????￥1???è??????oo?????????

a????°é?????èo???????????????°?o????????￡°é?3????2???3??°??′??ˉè???¨±????????????a??

?????°????????????èˉ??????1????￥??￥??????|???????????§??????

a??????????￥??°??¨?±±???????????μ??±??￥????????￥??oè?a?·±??±?????ˉ????????o?o?é?￠?-?????????°??ˉ??????a?|a?|a??

a?????é?￠?????3???????????????????￠?è???·2?????¨????o?????3?è????????a??

a?????è??è???￥?????2??o??????????????￥?????????????è°????a?|a?|a??

??????è§￡é?????è????????????????-?????·???

??°?o???ˉè???????????è????ˉ?????3è?????

è???¨±??ˉ??￥?￥????é??èo?????????¨è?a?·±èo???????è????1????￥??????oè?a?·±????¤??????′èˉ′???é???oo???è???????????

??°??¨?￥1???é?-???????°±??ˉè???¨±?μ?èo???ˉè??????¨???·???

????o????é?′??????????????2??????èoo??¨?o??????????????????-?????1????￥????

??1????￥????????￥1???è????±????????￥????????°???èa????

a???????????????ˉ1??????????????￥?????ˉé?′???????????o?o????????±±???????-??????¨?ˉoé????o?????1?1?????1?????1?????1?????￥??|??????ˉ????????o???????±±??′??????a??

a??è???o??1′???????ˉ1????????±é??é??è??????¤?????????????a??

???????????￥?′§è￠??-????????3a????￡°?·?è????°?o?????·???????

??1????￥?????1?é?￡?1?????????￠???

????-￡??±?￥1????oo?????¨????°±?-??o????

请退出浏览器阅读模式，否则将导致章节内容缺失及无法阅读下一章。