让我们假装是在沿轨道绕地球运转的宇宙飞船上!
Let 's pretend we're on the spaceship orbiting round the earth!
让我们假装是在沿轨道绕地球运转的宇宙飞船上!
Let's pretend we 're on the spaceship orbiting round the earth!
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.
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