An eclipse happens when the earth and moon are in line with the sun.

地球和月亮与太阳处在一条直线上，日食就发生了。

《牛津词典》

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The moon is a satellite of earth.

月球是地球的卫星。

《牛津词典》

Years of worry that the same rockets that could take people to the moon could also bring nuclear war to Earth.

VOA: special.2009.08.16

The moon seemed to contain all of the geological imperfections of earth.

月亮似乎包含了,地球所有的地质上的缺陷。

耶鲁公开课 - 弥尔顿课程节选

And this is a very fast speed, of course, it's about 700 million miles per hour. So, one way to put that in perspective is to think about how long it takes for a light beam to get from earth to the moon. Does anyone have any guesses? Eight seconds, that sounds good.

当然这是一个非常快的速度，它大约是每小时7亿英里,为了更形象化，我们,看看光从地球到月球,需要多少时间，你们猜猜是多少？,8秒，猜的不错。

麻省理工公开课 - 化学原理课程节选

It is much more massive than the moon or Earth but also much farther away.

CNN: The sun, the moon and the Titanic

And then you see a full moon and Earth at the same time.

FORBES: Magazine Article

If all goes well, the next target will be L1, the point 85% of the way to the moon where the gravitational pulls of moon and Earth balance.

ECONOMIST: The Americans may still go to the moon before the Chinese