zhiyuchaoguoleshejinengli、chengshikangbuzhudebufen，“xuyaoshejirongyuquyu，rangshuiyanzhichu，shikeyibeiyandedifang，shizhidingdequyu，yuguozhihou，qinglidiaoshuiyanquyu，jianshaoduizhengchangshenghuogongzuodeyingxiang。”ruci，shixianchengshijianshechengbenyushushidu、anquanxingdepingheng。至(zhi)于(yu)超(chao)过(guo)了(le)设(she)计(ji)能(neng)力(li)、(、)城(cheng)市(shi)扛(kang)不(bu)住(zhu)的(de)部(bu)分(fen)，(，)“(“)需(xu)要(yao)设(she)计(ji)冗(rong)余(yu)区(qu)域(yu)，(，)让(rang)水(shui)淹(yan)之(zhi)处(chu)，(，)是(shi)可(ke)以(yi)被(bei)淹(yan)的(de)地(di)方(fang)，(，)是(shi)指(zhi)定(ding)的(de)区(qu)域(yu)，(，)雨(yu)过(guo)之(zhi)后(hou)，(，)清(qing)理(li)掉(diao)水(shui)淹(yan)区(qu)域(yu)，(，)减(jian)少(shao)对(dui)正(zheng)常(chang)生(sheng)活(huo)工(gong)作(zuo)的(de)影(ying)响(xiang)。(。)”(”)如(ru)此(ci)，(，)实(shi)现(xian)城(cheng)市(shi)建(jian)设(she)成(cheng)本(ben)与(yu)舒(shu)适(shi)度(du)、(、)安(an)全(quan)性(xing)的(de)平(ping)衡(heng)。(。)