In theory, the Army could use such a system to approach targets covertly and drill through concrete, steel, wood, or other materials from a stand-off distance equal to the length of a football field.

理论上，美国陆军将利用该系统实现某些目标，既通过远距离(超过一个足球场的距离)的设备对混凝土、钢铁、木头以及其他材料进行隐蔽的击穿作业。

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Assemble drill to break through the first layer of crust, the crew deploys a steel pipe with an 11-inch-wide drill bit at the bottom.

为了突破第一层地壳，船员们使用底部装有11英寸宽的钻头的钢管。

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The drone of insects is interrupted by a high-pitched drill and the clang of hammers as workers put the finishing touches to the perfectly aligned steel tracks.

当工人们对排放整齐的铁轨进行最后的修整时，刺耳的钻动声和锤子的当啷生淹没了虫子的鸣叫。

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