Apollo astronauts used seismometers during their visits to the Moon and discovered that the gray orb isn't a totally dead place, geologically speaking.

阿波罗航天飞船的宇航员们登月时使用地震检波器发现：这个灰色的星球，从地质学角度上讲，并不完全是一个死气沉沉的地方。

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As we motored up, we could see the trim brown cabin sitting at one end of a half moon of pebble beach; at the other end, Cascade Creek tumbled into the glacial gray waters of the bay.

下了船，我们可以看见整洁的棕色小木屋坐落在半月形卵石海滩的尽头。在海滩的另一端，瀑布溪流跌落到冰冷的灰色海水中。

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Free of vegetation, the gray and white lava-covered peak of the Ubinas Volcano looks like it could be located on the Moon or some other extraterrestrial body.

没有植被覆盖，被黑白相间的火山岩覆盖着，乌比纳斯火山，就像坐落在月球或者其他地球外星体上。

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They described the moon's surface as a strange,gray,lonely place.

VOA: special.2009.07.08

The astronauts pointed a camera to show the view out their window, the moon's gray craters and mountains passing by around 70 miles below.

NPR: Affinity Fraud Preys On Group's Trust

The next astronauts to step out onto the dusty gray surface of the moon will be wearing a suit that's very different from the bulky white armor worn by the Apollo explorers.

NPR: NASA's Future Spacesuits Are Made for Walking