Chromatic Aberration — usually associated with objective lenses of refractor telescopes, is the failure of a lens to bring light of different wavelengths (colors) to a common focus.

色差-经常在折射望远镜的物镜上出现，是因为透镜不能把不同波长(颜色)的光聚焦到一点而形成的。

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IF the world's education systems have a common focus, it is to turn out school-leavers who are proficient in mathematics.

如果说全球的教育系统都有一个共同焦点的话，那就是培养出精通数学的毕业生。

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By using the theory of common focus conic bundle, a kind of advantageous directness arithmetic about conic's focus is obtained, and an example is given.

利用共焦点二次曲线束的理论，得出了二次曲线的焦点的一种十分方便的直接算法，并给出了一个计算实例。

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They are a pioneer in leveraging the Internet to build great relationships with their customers, a common focus of both organizations.

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Boeheim, meanwhile, says that, yes, he feels intense loyalty to the Big East, the conference that started with seven northeastern teams in 1979 and was bound together with the promise of short road trips, member schools with a lot in common and a focus on basketball in a football-centric college landscape.

WSJ: Boeheim plans on being back at Syracuse

Their common thread: singular focus, preternatural financial savvy and the optimism and confidence to wrest financing from seasoned investors.

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