The underground shelter was secure against all threats except a direct hit.

除非是直接被击中，否则这个地下掩体是非常安全的。

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They are charged with funding an underground youth protest group.

他们被指控资助一个地下青年抗议团体。

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People were rushing to the underground shelters during the air raid.

人们正在空袭期间冲向地下避难所。

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The ancient ruins lie just a few feet above the groundwater beneath the modern city street.

这些古代遗迹位于现代城市街道下方，距离地下水位仅有几英尺。

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The investigative team discovered severely corroded pipes underground.

调查小组在地下发现了严重腐蚀的管道。

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Fossils buried deep underground are seldom available for scientific research.

深埋地下的化石很少能被用于科学研究。

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Subway lines and bus routes, both aboveground and underground, met at the station.

地铁线路和公共汽车路线，包括地上和地下的，都在车站汇合。

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Walking through a subway makes the majority of us feel uneasy.

穿过地下通道让大多数人都感到不安。

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He served as a courier for the underground resistance and was parachuted into Warsaw.

他曾作为地下抵抗组织的信使，被空降到华沙。

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The underground system offers the quickest route for traveling to workplaces throughout Milan.

米兰的地下交通系统为前往工作场所提供了最快捷的路线。

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The underground passageway provides access between all five buildings.

这条地下通道为所有五栋大楼提供了通行便利。

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The municipal authorities are strengthening underground bunkers in case there is an air raid.

市政当局正在加固地下掩体，以防发生空袭。

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Beneath the surface, decades of mining operations created an extensive network of abandoned tunnels and subterranean corridors.

多年的采矿活动在地下形成了一个庞大的废弃隧道和地下通道网络。

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The snow kept falling non-stop throughout the entire day.

这场雪毫不停歇地下了整整一天。

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The underground tunnels extend over several kilo-metres in length.

这些地下隧道延伸长达数公里。

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