è????°??¨é?￡?±??o?è?a?·±?????ˉé??é?????????????′???????o???¨?μ????
a???￥????a??
?￥1èμ°???????o§???
???è???o§????±?é??????°±é????°?o?è?|é?????????o???¨?μ?èo????é?￡è?????è?????é|??°′??3???
?￥1?????￥???è?|??????è?|??????é????°é|??°′??3?°±??3??????
??￥????±??￥?è?￡??￥é??è?a?·±???è?|????ˉ??????￥??￥è?a?·±?????????é????????è?|?????°4S?o?????′??????￥???è?|???????????????????°???3???
??ˉ??°??¨?????????é??????o????
?±?é?????è1????????????o??????????¤′?????¨????????????
è???±??￥?è?￡é??è?????è§?é????￥è§??￥1??a???????￥?????????±é?????a?????????1??o????a??
?????￥???é??????o????
?±?é??????????a???è??????????±????????3èμ·??￥??￥???è?a?·±???èˉ????é?￡?¤????
???????1′???????μ?è????¨?-¤???é?￠????±?é?????è￠????????-??-???oè′????
è￠?è·ˉè??????±??￥?è?￡é??è§???-??????
é?￡?¤??¤§é?¨?￡??¤′???è??????2?????±??￥?è?￡?′§?′§??μ???è?a?·±????°?????????????????????°é?????a?????????????????????????????a??
??????èa?èˉ′è|????è?a?·±???è???-??????￥??￥????°?è???????¤?￥1??????è???￥1????????1?§??±????
??ˉ??°??¨????§??±?é????ˉ????????????
???????????a????±?é??????·??·?é?????a???2?????1??????a??ˉ?????1?′ˉ???a??
?????°é?|??|????±±????￠??????????
?±?é???????????è?|????°±?????°?o???????????¤???°????????￥????????ˉ???
a?????????????￥?????ˉ?|??|??ˉ1???èμ·????????ˉé?￡?????????????????a?oo?????¨??ˉ???????o????????????￥??????????????¨?o??-¤???é?￠é?¨??￡?????°??¨?|??|?èμ???°?o?????¤?é?±?????ˉ??ˉ?????°??¨??￥??o??￥???è?????????|??|????é???o§é???????????????????°????¤???￥é?a??????????????￥?-?????￥???????a??