Like land, sea and air, outer space has become an inseparable part of human life.

与陆地、海洋和天空一样，外空已成为人类生活不可分割的部分。

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"We operate in five domains: air, land, sea, outer space and cyberspace," says Dan Kuehl, a professor of information operations at the National Defence University in Washington.

“我们在五大领域作战：水、陆、空、外太空和网络空间。” 华盛顿国防大学的信息作战教授丹屈尔说，“我们的工作越来越依靠网络空间；

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"Robotics are all over land, sea and air," said DiDio. "Microsoft has a large robotics research program."

迪迪奥(DiDio)表示：“从陆地到海洋，再到天空，机器人技术得到了广泛的使用，微软有着非常庞大的机器人研究计划。”

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Instead,you should use sand from rivers or from other areas of land that are not near the sea.

VOA: special.2009.09.14

All the land between the water on the left side and a long, long way has been reclaimed from the sea.

天水之间广袤的大地在你左边,公路在填海而形成的土地上无限延伸

耶鲁公开课 - 欧洲文明课程节选

What they're doing is they're reclaiming the land from the sea.

他们所做的是围海造地

耶鲁公开课 - 欧洲文明课程节选

Within the plot of the play at least, in one case, the land appeared to be falling rather than the sea-level rising, and in another, both land and sea were rising together, thus disguising the reality of sea-level rise, but within the plot, a university department would lose a lucrative grant if they told the truth.

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But activists say Israel's embargo of goods into Gaza from land and sea punishes civilians in the tiny and densely populated strip of land along the Mediterranean coast.

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The article 'Sardinia, land and sea' was published in partnership with Lonely Planet Traveller.

BBC: Sardinia, land and sea