掩蔽部，使人员免受敌方炮火攻击的防御工事（多构建在地下）
在这些机枪碉堡后方是更多的铁丝网、更多的壕沟，以及使用混凝土进行强化并能承受炮火轰击的掩蔽部。
Behind the pillboxes were more lines of barbed wire and more trenches and dugouts reinforced with concrete to withstand artillery bombardment.
在前线，当亨利和几个意大利救护车驾驶员一起在地下掩蔽部吃饭的时候，一枚奥地利炮弹在他们上边爆炸。
At the front, as Henry and some Italian ambulance drivers were eating in a dugout, an Austrian projectile exploded over them.
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