行星上深的山谷类似地球的美国大峡谷，被认为是由水冲蚀形成的。
The planet has deep valleys similar to Earth's own Grand Canyon, which are thought to have been carved by rushing water.
提起葡萄酒，很少有人会将其与美国大峡谷联系在一起，殊不知这里除了如画的风景，也有上等的好酒。
Rarely would people think of Grand Valley in Colorado when talking about wine. However, Colorado has been producing high-quality wine for more than 40 years.
海斯表示，很多在线图片多少有些地理标签，不过这些描述可能经常有错误或者太过于宽泛，例如一张美国大峡谷的照片被标记为美国。
Hays said many online photos have some sort of geographic label, but these human descriptions can often be incorrect, or overly broad, such as a photo of the Grand Canyon labeled "U.S."
汤普森说科学家们在火星上发现了一个峡谷，与这个峡谷相比，“美国大峡谷就显得很渺小了”。这个峡谷现在仍然可能有水。
Thompson said scientists had found a canyon on Mars "that makes the Grand Canyon look like a small canyon, " where water could still be present.
汤普森说科学家们在火星上发现了一个峡谷，与这个峡谷相比，“美国大峡谷就显得很渺小了”。这个峡谷现在仍然可能有水。
Thompson said scientists had found a canyon on Mars "that makes the Grand Canyon look like a small canyon, " where water could still be present.
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