Now , a fortnight since hamas forces engineered the gaza break - out , the egyptian authorities have resealed and reinforced the border , some 12km ( 7 . 5 miles ) long , with thick coils of razor wire and hundreds of extra troops ; they say they will resist another attempt to knock a hole in it 现在，在哈马斯武装设计了这次加沙的爆炸之后，埃及政府重新封闭并加固了大约12千米（ 7 . 5英里）的边界，布置了带刺的铁丝网和数百名增援的军队；他们说他们将再进行尝试，在上面重新弄一个洞出来。
This study attempted to settle the danger of chironomid larvae as to ensure drinking water security by two approaches : one is to research on physiology and ecology of chironomid larvae in order to provide basis data for the forecast of chironomid larvae and service to the departments of water supply for solving breaking - out of chironomid larvae ; the other is to effectively remove chironomid larvae from water by strengthening water treatment process as to attain the radical solution for the problem of chironomid larvae 本研究旨在通过两条途径来解决给水处理系统中摇蚊幼虫的威胁:一是研究摇蚊幼虫的生理生态学特性,为摇蚊幼虫的预测预报提供基础数据,以指导水厂在其暴发期间采取应急措施;另一条途径则是从改进与强化水处理工艺入手,研究行之有效的水处理工艺技术,达到使其被有效去除的目的。
