"And this," says Dr.Williams, "is good news for long-term space travel."

威廉姆斯博士说：“对于长期太空旅行来说，这是好消息。”

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With the development of technology, space travel will be a common thing.

随着科技的发展，太空旅行将会是一件常见的事。

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After weeks of space travel, Chang'e 5 successfully brought back rocks from the moon.

经过几周的太空旅行，嫦娥五号成功地从月球带回了岩石。

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He also produced the thirteen-part series, "From the Earth to the Moon" because of his support for human space travel.

VOA: special.2011.06.17

There is that sense of space, of expansiveness, the possibility of travel.

这是一种空间感，延伸感，对旅行可能性的感受。

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The collision of the Russian and American satellites was the first of its kind in over fifty years of space travel.

VOA: special.2009.04.01

Here's a way: Commit America to big, gaudy, public contests in space travel and energy.

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In many ways these are dreary, dreadfully boring alternatives to moon colonies and space travel.

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Rocket fuel is currently the No. 1 reason that space travel is so expensive.

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