The huge underground complex being built there has been the object of U. S. interest since 1992.

正在建造的巨大地下联合体自从1992年以后美国已经有了感兴趣的目标。

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Since 1900, the U. s. has pulled enough water from underground aquifers to fill two Lake Eries.

自1900年起，美国从地下蓄水层抽的水足够填满两个伊利湖。

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U. S. Federal Railway Administration Research and Development Office developed a track surface and underground rock movement investigation system.

美国联邦铁路局研究开发办公室通过一项研究项目。开发出一种轨道表面及地下岩土移动勘测系统。

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Fifteen years have now elapsed since the United States last conducted an underground U.S. nuclear test.

CENTERFORSECURITYPOLICY: The ��Genie-stuffers��

It is a U-shaped underground villa, built of metre-thick concrete slabs to withstand air and artillery attack.

BBC: De-mining in the Horn

The Clinton team has argued that such steps are justified since an end to U.S. underground testing is an essential factor in dissuading would-be nuclear powers to give up their ambitions.

CENTERFORSECURITYPOLICY: Center for Security Policy | Vive La France! French Determination To Perform Necessary Nuclear Testing Should Be Wake-Up Call To US