第7章（第3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。

?￥1??￡??￡????????¨?????°è???1????

?????????è??????????￥???é???￡°é?3???a???????¨è??é?????????1????a??

???è???o?é??????????¨?o???????é|¨èo?è?1???è?|?a?è????????é?2??oé???o?????￡±è§??????????è?????

??????é|¨??????é???o?????????|????o?è??????????????é????????a?????????1???¨è????????a??

é???o????è1???????è§￡????????￥é??????1?????o??????????è§?????1′?????????é|¨?????ˉ?2??￥??????????

??????è?a?·±???èˉ?è???￥1???è?a?·±??o?·?????¤?????????￥???

?￥1è??è|??¤??-¤???é?????

é???o???????è????|?ˉ1?￥1èˉ′???a???????o?·??????￥?o????èμ°??§??????????????????a??

è??????????????é|¨????a?????????°è?a?·±???è?°é???o??????ˉ?????o????1?è????o?·?????o????

???è???￥1?1??2?é?????

?·2??????è|??|?????o????é???o?????????o????1?è???|?????1??·2??????é??è|??o????

??¤??a?oo?????°??????

é???o???????????¤??￥????????????￡???a???????????????????′????????????èμ·????????????a??

??????é|¨??3èμ·????¤??°±è|??|?????o???????

a??????????3???????????|???????oo?????§???????-￡??????????¤??￥3?????????a??

é???o??????????è????§???a???1?????????ˉèˉ′?￥??o?????????????é???????????èˉ′è???o????a??

??????é|¨?????￡???

?￥1????1????????-??o?è?????

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。