They found fossils of microscopic marine plants which suggest that the region was once open ocean, not solid ice.

他们发现了微型海洋植物的化石，表明该地区曾经是开放的海洋，而不是坚固的冰层。

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The contest is open to everyone, but preference is given to authors living in the Eau Claire, Menomonie, and the Chippewa Falls region.

这场比赛对所有人开放，但住在欧克莱尔、梅诺莫尼和齐佩瓦瀑布地区的作家可以优先。

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Within samples collected from the solid substances lying beneath the ice they found fossils of microscopic marine plants which suggest that the region was once open ocean not solid ice.

在从冰下的固体物质中收集的样本中，他们发现微型海洋植物的化石，这表明这个区域曾经是开阔的海洋而不是坚硬的冰。

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Indigenous groups from the Amazon region have marched for 700km (430 miles) to protest against plans for an open-cast copper mine in their region.

BBC: Rival marches in Ecuador over Amazon mining plans

The region's more open systems - Thailand and the Philippines- have also been able to maintain political stability because their democratic mechanisms were permitted to function.

CNN: Vietnam and the Crisis

Federico Bloch, a Salvadorean who controls all the airlines that matter in the region, has assented to an open-skies agreement with the United States that will pit him against the big American airlines.

ECONOMIST: Central America opens for business