The planets are bigger than Earth -- one is 4.2 times the mass, one is 6.7 times and the third is 9.4 times.
这些行星都要比偶们的地球大，她们的质量分别是地球的4.2，6.7，9.4倍。
Earth is the third planet from the sun and funnily enough, the one we know the most about.
地球是从太阳和有趣的是第三颗行星，一个我们知道最关注。
Footprint - the area in which a specific transmission can be received. Some footprints cover as much as one-third of the earth, such as satellite or cell systems.
覆盖面-某个卫星信号覆盖的区域。有些卫星信号覆盖面非常大，达整个地球的三分之一，例如卫星或手提电话系统等。
LI: Don't you know the land is just one third of the earth?
李：你难道没听过地球上陆地面积只占三分之一吗？
The gravity on the surface of Mars is about one third as strong as it is on earth.
火星表面的引力大约是地球表面引力的三分之一。
During the third hundred years, I made a promise that if any one came to set me free I would make him king over all the earth.
在第三个百年中，我许诺：如果有人来救我，我会让他成为统治天下的君主。
Land covers only one third of the earth.
陆地只占地球表面积的三分之一。
The moon is one-third the size of the earth.
月亮是地球的三分之一那么大。
The moon is one-third the size of the earth.
月亮是地球的三分之一那么大。
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