更多近期的地质研究证明了13000年前的冰川消退现象和整个加拿大不列颠哥伦比亚省主要沿海地区内无冰区的存在。

More recent geologic studies documented deglaciation and the existence of ice-free areas throughout major coastal areas of British Columbia, Canada, by 13,000 years ago.

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最近的证据支持了一个与长期存在的理论对立的观点，该理论认为，在1.1万至1.2万年前，美洲是由从白令海峡沿中大陆无冰走廊向南迁移的人殖民的。

Recent evidence favors a rival to the long-standing theory that the Americas were colonized 11,000-12,000 years ago by people migrating south from Beringia along a midcontinental ice-free corridor.

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这比15年前高出31%，每年融化的冰足以使瑞士淹没在7.2米的水下。

That is 31% more than 15 years ago, and enough ice melt to put Switzerland under 7.2 meter of water each year.

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