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The legislation that created it speaks of the expansion of human knowledge of the atmosphere and space, and the improvement of the usefulness and performance of aeronautical and space vehicles.

是法律创立了国家航空航天局，并使它做到了对大气层和太空知识的探索、显著提高了航空航天器的性能。

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Compare it to Figure 2 and you notice that the performance of the knowledge base is already better than that of the first knowledge base you built.

与图2进行比较，您会注意到，知识库的性能已经比第一次构建的知识库好多了。

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Jones was sentenced to six months in prison for lying about her use of banned performance enhancing drugs and her knowledge of an illegal check-cashing scheme.

NPR: Disgraced Marion Jones Sentenced to Six Months

With a project-level perspective, an experienced developer possesses a thorough knowledge of field-tested plant performance down to the level of the solar module and even the solar cell itself.

FORBES: Going Solar: A New Approach To Measuring Performance

These "marathon mice" can run twice as long as their unmodified brothers and sisters-- and, in a paper coming out right at the time of the Olympics, that's leading to hand-wringing about the possibilities of applying this knowledge to create performance-enhancing drugs.

FORBES: Of Marathon Mice And Fat Men