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。
They found fossils of microscopic marine plants which suggest that the region was once open ocean, not solid ice.
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。
The contest is open to everyone, but preference is given to authors living in the Eau Claire, Menomonie, and the Chippewa Falls region.
从航行自由到开放市场和公平竞争，我们对稳定的地区秩序和清晰的通行规则怀有共同的愿景。
We share a common vision of a stable regional order with clear rules of the road -from freedom of navigation to open markets and fair competition.
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