7月30日20时，河北启用大陆泽、宁晋泊蓄滞洪区滏阳河以西区域滞洪，这是海河流域第一大、全国第三大蓄滞洪区。启用后，可以保护天津、京沪线、石德线、华北油田等下游地区防洪安全。

wen：riqianjuxingdebeiyueweierniusifenghuifabulianhegongbao，chengzhongguodeyexinhexiepoxingzhengcetiaozhanbeiyuedeliyi、anquanhejiazhi，chengzhongguogoucheng“xitongxingtiaozhan”。qingwenzhongfangduiciyouhepinglun？<(<)s(s)t(t)r(r)o(o)n(n)g(g)>(>)问(wen)：(：)日(ri)前(qian)举(ju)行(xing)的(de)北(bei)约(yue)维(wei)尔(er)纽(niu)斯(si)峰(feng)会(hui)发(fa)布(bu)联(lian)合(he)公(gong)报(bao)，(，)称(cheng)中(zhong)国(guo)的(de)野(ye)心(xin)和(he)胁(xie)迫(po)性(xing)政(zheng)策(ce)挑(tiao)战(zhan)北(bei)约(yue)的(de)利(li)益(yi)、(、)安(an)全(quan)和(he)价(jia)值(zhi)，(，)称(cheng)中(zhong)国(guo)构(gou)成(cheng)“(“)系(xi)统(tong)性(xing)挑(tiao)战(zhan)”(”)。(。)请(qing)问(wen)中(zhong)方(fang)对(dui)此(ci)有(you)何(he)评(ping)论(lun)？(？)<(<)/(/)s(s)t(t)r(r)o(o)n(n)g(g)>(>)