By this process enormous amounts of mud and rock are moved from the land to the sea.each year the Mississippi Rivercarries 730 million of solid matter into the Gulf of Mexico.

通过这一过程，巨量的泥沙和石块从陆地移入海洋。每年，密西西比河要把7.3亿吨的固体物质送入墨西哥湾。

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Heavily into mountaineering and rock climbing, I lived and climbed everywhere, from crags outside Seattle to volcanoes in Mexico.

大量地登山、攀岩，从西雅图周围的峭壁到墨西哥的火山，到处都留下了我生活和登攀的身影。

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This glassy one is found in volcanic rock. In fact, I found it in New Mexico on a collecting trip.

这个像玻璃一样的矿石是在火山石里面发现的，实际上，我是在新墨西哥州收集旅行中发现的。

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As a result of the new contract, Ford will expand production of the Fusion, now built in Mexico, by adding a line at its plant in Flat Rock, Mich.

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For example, 22 students Slippery Rock University in Pennsylvania who just returned from from a five-week trip to Mexico City will get their diplomas at a separate ceremony when they graduate Saturday.

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The company says surveys have revealed huge numbers of so-called nodules - small lumps of rock rich in valuable metals - lying on the ocean floor south of Hawaii and west of Mexico.

BBC: UK Seabed Resources joins deep-ocean mineral-mining rush