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。
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。
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。
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。
应用推荐