问题: the reality of mechanized gun fire forced made entrenched defense the supreme strategic rule of WWI.
the reality of mechanized gun fire forced made entrenched defense the supreme strategic rule of WWI.Sandbags, concrete, and trenches formed two lines of defense facing each other, stretching from the North Sea to the S witzerland. Life and death in the trenches was a horror.
解答:
机械式军火这一事实已强迫人们建造沟壕防御体系。WWI，沙袋，水泥和堑壕等至高战略原则形成了相互对峙的两道防御线从北海一直延伸至瑞士。恐怖的是这条防御线上生与死的挣扎较量。
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