Earth is the only one of the inner planets with a large satellite, the orbit of which is neither in the equatorial plane of Earth nor in the plane in which the other planets lie.
地球是内行星中唯一一个有大卫星的，它的轨道既不在地球的赤道平面上，也不在其他行星所在的平面上。
During this period of irregularity, which may have lasted millions of years, any rocky inner world sitting in the path of the hot Jupiter and its new orbit would have been obliterated.
这种不规则的时期可能已经持续了几百万年，在此期间，位于热木星原有轨道以及新轨道上的任何系内的岩石行星都有可能已遭毁灭。
The Messenger began its trip through the inner solar system six and a half years ago, and it entered orbit around Mercury on March 18.
“信使”号探测器在六年半前开始了它的太阳系之旅，直到今年三月十八日才进入水星轨道。
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