During the cold war space was largely thought of as part of the rarefied but terrifying domain of nuclear warfare.

冷战期间，太空主要被视为纯净而可怕的核战领域的一部分。

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But some researchers, including the U.S. Navy's Space and Naval Warfare Systems Center, still believe that low-energy nuclear reactions have a future as a power source.

但是一些像美国空间和海战系统司令部这样的研究机构仍然相信低能核反应是一种非常有前途的能源。

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Although they have only had a little more than a half-century of impacton history, the fear of nuclear annihilation has permanentlytransformed the face of warfare.

虽然他们只有半个多世纪的影响历史，但是对核毁灭的恐惧已永久改变了战争面貌。

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Paradoxically, if nuclear warfare represented the highest level of warfare, there developed at the lowest level covert operations.

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This gives rise to the worry that the distinction between conventional and nuclear warfare would be blurred, leading to a lower threshold for a nuclear attack, and thus to the undermining of the global non-proliferation regime.

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The world has gone over sixty years without another detonation of a nuclear weapon in warfare.

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