第4章(第3页)
?2????è?????è????????è?1????1′?1?è¢?è???????o????????¨?o??§???£?|?èo?è?1???
a??è????¥??o?????¥??????é???o?è????a???è?o????2???3??°???è?¨??°?????o?¥????a??
??????????????????????§???£?|???????èˉ?????¤′??????è¥??′2?????????
?°±è§?????-£?′§?′§??±?????????è?????é?£?1???¨????????¤?ooèo????è′′??????é?£?1??′§?ˉ?a?|a?|
?§???£?|??????¥?2?è§?è?????è¥??′2è????a??·?-??????¥?????¨???èμ·????????????????1??????ˉè·?è?a?·±???è·????????ooé???????????è·??|????
???è¥??′2?°±????????a???é£??ooé?′??????????¥???????
??°??¨??′?¥????è¢???????è?????è???o??o¢?°?é????????????o??????a?????????????′????????oo???
?|?????????ˉ??±??????????1??????????è????·???
?§???£?|??????±????????????????1′???è¥??′2è·?è?a?·±??¨???èμ·???????????ˉ?????o?????¢??????
??′??°????????????????¥1é????????è???¥???¥???
è?1????1′?°??§???£?|??????????è¥??′2??????????¨???·?°????????o????
???????¥????é?ˉ??????è??????°±é?????è???o?èμ·??¥???
a?????????1???¢???a??è?1????1′??????????1?é???????¥é???????????????μ????a????ˉ?????ˉè?????????o????a??
èˉ′?????????è12???èo???????????°±????£???¥?¥1???è??è?????
?§???£?|???3èo2???è???2???¨????°±???è§???¨é?-?°??°??????·???
?¥1?????°????¤′????°±è§????è¥??′2?????¨??¤?-¥?¤????????????ˉ???è?1????1′??????è?a?·±è??è???????????