天文学家们首次发现它时是在寻找介于这两大行星间的另一个行星。

Astronomers first spotted it when looking for a new planet they thought should exist between these two.

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行星对人类的作用以不同的形式表现出来，受其黄道带位置及其与其他行星间的关系的影响。

These planetary forces take on different forms, depending on their zodiacal positions and on the way they relate to one another.

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计算机工程：一个修改版的互联网通讯协议正在太空船上进行测试，此协议专门用于行星间通讯。

Computing: a modified version of the Internet's communications protocol, devised for interplanetary use, is being tested by spacecraft.

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