对美国太空总署来说，这是很重要的一个月。

This is a big month for NASA.

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发现号是美国太空总署航天飞机机队里最老、服役年头最长的一架航天飞机。

It is the oldest and longest-serving vehicle in the U. S. space agency's shuttle fleet.

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如果“复仇者”存在，美国太空总署最新的广角红外线探测望远镜(WISE)可能会发现它。

If Nemesis exists, NASA's new WISE telescope should be able to spot it.

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美国的太空总署NASA甚至购入了有问题的制造材料。

NASA, America's space agency, has even bought suspect materials.

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美国的太空总署NASA甚至购入了有问题的制造材料。

NASA, America's space agency, has even bought suspect materials.

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