With more financial backing the structure would have been by far the tallest man-made object in the world.

当时这个世界上预计为最高的人造建筑需要大量的资金支持才能建造下去。

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It might be a natural feature formation, or possibly a sunken, round man-made object. UFO Battles Captured on Video?

这种形状可能是由一种自然特征所形成，或者也可能是一个沉没在海底的圆形人造物体。

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Racking up another Soviet first, this mission became the first man-made object to successfully orbit another celestial body.

这艘探测器又前让苏联创造了一个第一：它成为首个成功围绕另外一个天体运行的人造物体。

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It measures 5, 500 miles and is the only man-made object observable from the moon.

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On November 17, 1998, Voyager 1 became the most distant man-made object from the Sun when it reached a point further away than NASA probe Pioneer 10, which launched in 1972.

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Although it is not, as is commonly believed, the only man-made object visible from space, China's Great Wall still amazes with its sheer size, and remains impressive as a testament to architectural will, and to the need to keep out the Mongol hordes.

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