The adaptation is so precise that when a louse 's host species evolves into a new one, the louse will diversify into different species, too.

这种适应特征非常精准，如果虱子的宿主物种进化成为一种新的物种，虱子也会进化成不同的物种。

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Two new species of dinosaur fossils, one a quick-moving meat-eater and the other a giant plant-eater, have been discovered in Antarctica, U. S. researchers said.

美国研究人员说，南极洲发现了两种新型恐龙化石，一种是移动迅速的食肉恐龙，另一种是巨型食草恐龙。

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Scientists say a new bacteria species discovered in Yellowstone "s thermal pools could improve the use of bacteria to produce ethanol."

科学家表示在美国黄石的热池中发现的一种新细菌能帮助提高酒精的生产。

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The idea that species change was not new even in Darwin's time.

VOA: special.2009.12.01

"She's become unstable." "This is the disaster everyone warns about: a new species set loose in the world."

VOA: standard.2010.06.09

Koetsu's is as new a species in spacing as Shakespeare's is a new species in drama.

CNN: ASIANOW - TIME Asia | The Subtle Magic of Koetsu

Last year's count introduced a few new species to North America, including the exotic purple swamphen, an escapee now breeding in the Florida Everglades.

ECONOMIST: A splendid tradition in its 109th year

Scientists with Conservation International on Monday announced the discovery of 10 new species in what's being referred to as a safe haven for frogs located in the west of the country on the border with Panama.

CNN: New species found in Colombian forests