The orbit of the artificial satellite has an apogee of 200 miles from the earth.
这个星的轨道,其远点在离地200英的地方。
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The corresponding change in gravitational force causes the Earth to move fastest in January when it reaches its closest point to the Sun, the perihelion, and the slowest in July when it reaches its farthest point, the aphelion.
相应的地引力的变化使地在一时公转更快,也就是到达离太阳近的点时,这个点被称作“近日点”,到达离太阳远的点时,公转慢,这个点也被称作“远日点”。
The traveller heading off into space would describe a gigantic circle and eventually come back to where he started from: another space traveller, starting from the farthest point on the first astronaut's orbit, would define another, more distant circle.
前往太空的旅行者会描述一个巨大的圆圈,并终回到他出发的地方:另一个太空旅行者从第一个宇航员轨道上远的点开始,将定义另一个更远的圆圈。