(1/2)ҳ
Ӹûκεͣٵģٵijȥˡۡһͷľײȥˣеijӣȫǿײͣģײ֮ͣϵʿȫ˶ıݣ˲ǹִ˳һ̹ˣ۶ŻǹʼͣɨűϵϵʿҿʿӲһ¾ſ̹棬һӶóף͵ǰһˣ˵̹˵Ͳǰ棬˫ֱӾͱסͲ̹˵Ͳڵתʿ˳ƾͰӵͲ棬ǹЦݣǷЦޱȵIJӶóǹǹڶ棬ҿ۶˰漴ۣۡը̹ͣԭأҵ˴˳ţųŵ
˽кųDZ߾ͳȥվڵλȷʵȽϸߣȥͷкţһӲƥеƣij̡
ǰȷѾȫ˻ڣҿվȺм䣬Ѫij¿䣬ϻŴ̵һĽкţȫDZ߳ȥˡ
ѪڣתͷɡϡҸһ¾վɺһ£ңһЩżˡϡ
ɺ˻һҲ˽ˣҵijҲֱӷˣˣΧʮҵߣҿһ·Ĵ𣬻ʬ壬ҳ嵽ſڵʱѾ˾ӪҿһһϵʿϻŴ̵մ̣ÿǷʿѾȫĸǹ̷IJӣһƽ˵ļƣһ̧ͷĹDZһϵʿ˸Χסˣһ˿˵Ŀ־嶼ûдţԼǧһͳȥҶȥȥУҿһˣDZ˾ΧһΧ˻ţԼϵĴ̵ذףɱ۵ҰһĻԼǷצţĻ裬Ҿôһһ̷ʿ£һգ۵Ĺˣ˲ӣһʱ̵ĿڣһDZϵʿ˫ס˲ĸˣϵʿѪؿڵλûذײţӵϻվ̧ͷһǣߣöӡ
ʿվѾ֪סˣϢˣЦţվıֱҾһǣǵѪѾˣţ̼̼һЧ̼̾кͬʱǵѪڴڵ˳˵˵ϣҿصʱżذף涼ЩˣǴСͱϴѵ̼ҵϵֻЧ̼һ뷨
͵һתͷ棬һϵʿɵ˺ü֮һֱذؿڵλãѪΧһƱ˳˹ȥ
ȥˡҴӱϼˣָDZߣһѾˣҿֱӳȺ߰˸ˣϻŴ̵ϾȥˣֱӾͰΧм䣬漴ûпĶˡۡһҵıըΧ߰˸˲ȫˣϵʿըѪɣһʬ嶼ûˣתͷһ˲䣬ijҲˡ̾У֪˭һǰ¿ŵһѾҪ̷ľӪˣˡ
˳ʱֱӵѹǸ
(1/2)ҳ,һҳĶ
ǩĶ