ȷƣһ1~3¿Իָòʱƣʱ䲻תĤDZȽصĽĤ䡣һᷢĤƤȱ(˻۾ĤƤȱ)ʱƣϸԻԸȾòʱƣܻںܳʱ䣬ֽĤʹᡢۺҪʱȥҽԺƼʱָܿõҲָܿƴʩܺܳʱ䶼תһҪȥҽԺƣԾԭѡȷҩע۲Ҫ˹ϴƷ
ãᵼʧĤصĻԵʧ飺źĸĤأʧģƽʱעⱣ۾۾ʳ嵭Ϊ۾ˣ۾нĤףӦʱƣʱ䣬顣
ָҩˮͷҩˮʹã 2СʱһΣϴÿ2-3ΣӦõʹãֹȾ
ĤǽĤȾȽصµġĤȾۿԷΪϸԣԣԸȾײùصɵҺڼҺڿƽĤ֢Ӱ졣֢ûеõЧƵʱʹҩпܻᵼ¸Ⱦء飺ӦݽĤȾͣȡԵҩҲһϸȷȾ͡ҩЧŻԡĤصĻסԺơΪĿܡȽϼʱ
ãһŧ˾ԽĤҪ֢״Ϊʹͷʹ塢¹⡢ᡣ飺鵽ҽԺϸơһӦÿҩˮƵ㡣ͿҩࡣĤע俹ءĿڷάءƷɢͫơףտ
ָãĤϸΪϸԣԼԽĤף鵽ۿƾȷϡ