(1/2)ҳ
˵Ҹеdzdzңģʵεļƻ뵱ijɹҪ㱨ɱ˼㣬ˣɱˣҪǽһ·κͩɨϰˣκͩسŵƨɣˣŲĵط뿪·ߣҲˣţҲ㱣ȫˣպлᣬûˮתϣʲôûģģҲҪģõǮʱҪΪľǺʱκͩˮˣҿ϶ͲˣûݣˣãʵҲзյģǾǶκͩˡ
ʵһӸɶзյİʼ˵õԺûκѹˣʣµľңҲνġ
κͩôǮѹϣͲ·ˣ
ҲɵӣҵϸƬˣ˵趼ҪҲͲҪˣʵǾǴ˭˭顣
ʵ鷢չزҾõĽˣ
˵⣬dzdzİң˺һ˵ף㻹ԼΪģҵ鲻㣬汳ҲҾԲģֵ֪ܣòźĵġ
ͻȻ֮վһѾͺסҵIJ˶ŭˡ˸ڣҪǮ˵
֮תһȭյҵϣұһȭչˣҶ㶼û㣬ȭ˵϶ˡ
˸ڣֵֵܣֵܾͲֵһҺ˵
һߺУһ߷ŭľͳֳ˹
յұϣҪȭͷʱĴŴһ˽˱ıϣһѾץס˱Ʊ磬ķŭˣָܴҲͣĽҾͿʲô˵Ϊ֪Ҳ˵ʲô
泳ĺҺң쳣ķŭүôű磬͵һ˦֡ˣ֪֪ʲô֪֪
磬ˣִˣܽʲô⡱
ָңЩ¡ģ㱾óĵģ˸ڣ㣬ңҾûˣ㣬ˣ˸ڣһֱ֪ƻթû뵽ܼթֵزԼ˶ƣҲҽ첻ۣΰԺ費ˣ˸Ҳ1
ŭˣ㵱˵ʱûôķŭǵˮʱȴ˶ŭ
ûС
ҲǴͷҪһˣסı磬۾沼Ѫ˿ŭһָҡҸ㣬ڿʼңһϣԹ壬ģԼȥij㰮ôô룬˸ڣ㺦ֵܵ飬һ˵Ļ˭ùҹ
һҪ壬Ҿԭվţҿű硰һһ˵Ҫʲô˵ɣҴţһñء
ȥġ
ӱһ¾תҪ͵
(1/2)ҳ,һҳĶ
ǩĶ