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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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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Once open, the highway is expected to see 400 trucks a day carrying goods from Brazil to Peruvian ports.

开通后，这条公路上预计每天会有400辆运货卡车从巴西开往秘鲁的港口。

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And so we can thank the American buffalo that once wondered the open plains for this meaning of the word buff.

VOA: special.2009.05.17

The foreign-exchange market, once open and liquid, gains a new restriction every second week.

ECONOMIST: Russia��s economic quagmire

Once open, the council will transfer management of the centre to the Alt Valley Community Trust.

BBC: Rhys Jones Community Centre in Liverpool to open in July

Wolf Minerals hopes to begin mining at Hemerdon in 2014 and once open, it is believed the mine will be the fourth largest tungsten resource in the world.

BBC: Den and Lynn Fellows