For their study, Loewy and colleagues collected rocks from a region known as the North American Mid-continental Rift System.

为了研究，Loewy和同事们收集了北美中大陆断裂系中一块区域的岩石。

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Much of the activity between the continental shelves takes place deep underwater at the mid-ocean ridges.

大部分的大陆架的活动发生在深水下的大洋洋底的海脊。

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Iceland lies on the Mid-Atlantic Ridge, the volatile meeting of the Eurasian and North American continental plates.

冰岛位于大西洋中部的脊上，是亚欧大陆和北美板块的交界活动处。

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LSE's own business plan sees its Alternative Investment Market luring mid-sized companies from continental Europe with the promise of low costs and deep liquidity.

ECONOMIST: London Stock Exchange

Pleats were big in menswear until the mid-'50s, when flat-front pants arrived with that era's slim Continental look, and stayed in vogue, only ending when boxy looks took over in the '80s.

WSJ: The Pleats Plea: Wear These

The promise of a massive support program for Spanish and Italian debt markets started boosting continental bourses in late July as government bond yields backed down from scary mid-summer peaks.

FORBES: Is the European Retail Rebound for Real?