Calculating this angle would allow astronomers to measure what was then the ultimate goal: the distance of the Earth from the Sun.

计算这个角度可以让天文学家测量地球到太阳的距离，这是当时的终极目标。

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They also think they can explain the bright flash seen from the earth earlier this month: it was a meteor, though a small one that didn't get very far.

他们还认为他们可以解释本月早些时候，从地球上看到的明亮闪光，尽管是很小的一颗流星，但没有飞多远。

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When you analyze this light, you can figure out their distance from the Earth, and identify what they are made of, determine their chemical composition.

当你分析这些光的时候，你可以计算出它们与地球的距离，并确定它们由什么构成，查明它们的化学成分。

youdao

This meant the Apollo Eight astronauts could fire the rocket that would send them from Earth orbit toward the moon.

VOA: special.2009.07.08

It's the passage from Spenser's cave of Mammon canto that describes this same scene of violation, the violation of mother earth.

这是斯潘塞笔下描写贪神之洞的长诗的篇章,它描述了对于大地母亲粗暴冒犯的场景。

耶鲁公开课 - 弥尔顿课程节选

It's always Milton's duty - this is the reason that he was put on this earth: to liberate a people from any such constraining customs.

弥尔顿的使命是,-他是为此才诞于世上：,将英格兰民族从所有抑制人的传统中解放出来。

耶鲁公开课 - 弥尔顿课程节选

But it feels intimate and genteel, with an old-world elegance that is mostly gone from this earth.

WSJ: Insider's Travel Guide to Madrid

And how Cobain was a musical genius, gone from this Earth too soon.

CNN: Commentary: The roots of grunge run deep

All of us have no greater dream than to see the day when nuclear weapons are banned from this Earth forever.

CNN: State of the Union Address