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。
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.
我们需要的是一个在赤道处地面上的非常高的塔，以及沿地球静止轨道绕地运转的卫星。
What we need is a really tall tower here on the ground right at the equator and a satellite in geostationary orbit.
卫星将与三个中等地球轨道并排在与赤道56度的倾斜角度上运行，并且可以覆盖全球。
The satellites will be strung along three medium-Earth orbits at 56 degrees inclination to the equator and will provide global coverage.
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