The Ecuadorian population examined by Kronforst and his colleagues shows the same white and yellow variation found in Costa Rica but has not yet reached a level of strong reproductive isolation.

通过科瑞·福特斯和他的同事的调查得出，厄瓜多尔的蝴蝶种群与哥斯达黎加的蝴蝶种群一样，都具有白色与黄色种群的变异，但是并未达到一种显著的生殖隔离的水平。

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Because the world's total population was small, the earliest societies were able to survive in isolation.

因为那时世界的总人口数量很小，早期的社会可以在孤立状态下存活。

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By 1999, the practice had grown to the point that Arizona, Colorado, Maine, Nebraska, Nevada, Rhode Island, and Virginia kept between five and eight per cent of their prison population in isolation, and, by 2003, New York had joined them as well.

NEWYORKER: Hellhole

One population of mammoths lived on in isolation on Russia's remote Wrangel Island until about 5, 000 years ago.

BBC: The mammoth's trunk and eyes are still intact

Its isolation has led to a unique geography and animal population, including the lemur, which took a star role in the 2005 animated Hollywood movie named after the island.

BBC: Pupils met the delegation from the Madagascan embassy