ʯwԸIYʯ
֮˂^ųһЩwЂļȻһF(xin)˾ҪeOIJȡһЩʩM̎Ǵ֪IYʯF(xin)Ӱ푵Ԯl(f)F(xin)@ӲĕrҪrȡʩMίôʯwԸIYʯ?ǺεĽ
ʯwܸܲIYʯ?䌍Y߀˶ʯwǿίеIYʯYʯǺܴһf߀һЧҲкܶDzõҪYʯľwλǷܾoȵȶεr߀ǵÿYʯrܲų߀ǽhʹʯw߀ǵt(y)ָÁf߀ǵÌYˎֻҵmԼYˎű^õ
ʯwĸв_ˎRϳõˎίЧ@ʹ÷ҪĻ߿xİl(f)֮һҪֹͣˎYpIJл֏Y^صIJ߱횵t(y)Ժԃt(y)t(y)̎^صˎƷҪסԺί
֪RչʷIYʯ\ϘOЎʹcѪ^F(xin)rȿ]IYʯɰųɴ_\YʯԔԃߵʳˎʷʷȾʷ
σvҲʯwܲίIYʯ@Щ҂ҲҪJ˽ͬrҸҪѴҶעԼw׃˼ҪeOx^õkM̎ί@ӌw֏к̎