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Valles Marineris

[val-uhs-mar-uh-nair-is]

noun Astronomy.

a canyon on Mars, 3100 miles (5000 km) in length, named after the Mariner spacecraft.

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Based on the Random House Dictionary, © Random House, Inc. 2012.
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"Mr. Alcott seems to have sat down for the winter. He has got Plato and other books to read. He is as large-featured and hospitable to traveling thoughts and thinkers as ever; but with the same Connecticut philosophy as ever, mingled with what is better. If he would only stand upright and toe the line!—though he were to put off several degrees of largeness, and put on a considerable degree of littleness. After all, I think we must call him particularly your man."

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