For much of military history, battle was a continuous struggle between weaponry and protective systems: spear and shield, sword and mail, shell and armor.
对于大部分的军事历史来说，战场就是攻击武器与防卫系统持续不断的斗争：长矛与盾牌，利剑与盔甲，炮弹与装甲。
For much of military history, battle was a continuous struggle between weaponry and protective systems: spear and shield, sword and mail, shell and armor.
对于大部分的军事历史来说，战场就是攻击武器与防卫系统持续不断的斗争：长矛与盾牌，利剑与盔甲，炮弹与装甲。
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