It means handling a consistent but useful problem space.

它意味着处理一致但有用的问题空间。

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This radiation pressure is thought to shape the tails of comets and is useful for pushing solar sails in space.

这种辐射压力被认为是彗尾形成的原因。 另外，它也是太阳帆在太空中前进的动力来源。

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A suit that maintains a stable pressure around its occupant; useful in both space exploration and high-altitude flights.

这种在使用者周围保持一个稳定压力的衣服被用于空间探索和高空飞行。

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By diverting time and resources towards manned moon landings, the US government may have delayed useful exploitation of space by decades (a similar argument can be made against the original transcontinental railroad).

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The answer was to take something we're intimately familiar with -- our smartphones and tablets -- and make them more useful in the combined space of videogaming and living room entertainment, a space that the Xbox 360 dominates.

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That breathing space would be useful if something really bad, such as the collapse into the sea of part of the Greenland ice-shelf, was in imminent danger of happening, and the realisation of the danger led to a political agreement that climate change had to be stopped rapidly.

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