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- The impact opened ecological niches for mammalian evolution, which eventually led to the development of our own species. 这场浩劫为哺乳类的演化提供了生态区位，使我们这个物种最终得以诞生。
- The discovery lends some credence to a hypothesis that the Arctic was an early center for these mammals' evolution, she said. 而这次发现给认为北极是这些哺乳动物进化的中心地区的假设增加了一些可信度。
- The first mechanistic study of how a red blood cell loses its nucleus, the research sheds light on one of the most essential steps in mammalian evolution. 这是关于红细胞去核机制的第一个研究，这研究也为阐明哺乳动物的进化中的关键一步，带来了一线曙光。
- A whale is no less a mammal than a horse is. 鲸鱼和马一样都是哺乳动物。
- The whale is the largest mammal in creation. 鲸是世上最大的哺乳类动物。
- The space program is the evolution of years of research. 太空计划是多年研究的发展结果。
- Introduction during embryonic development of characters or structure not present in the earlier evolutionary history of the strain or species (as addition of the placenta in mammalian evolution). 在胚胎发育过程中出现一些没有在生物物种早期进化过程中出现过的特征或结构（如在哺乳动物进化过程中胎盘的形成）。
- Darwin put forth the theory of evolution,. 达尔文提出了进化论。
- Mammal evolution 哺乳动物演化
- Do you know about the evolution of a seed into a plant? 你知道从种子发展成为植物的过程吗？
- Whale is not a fish; it is a mammal. 鲸不是鱼类，它是一种哺乳动物。
- Our watchword is: Evolution, not revolution'. 我们的口号是: ｀要循序渐进，不要剧烈变革.;＇
- To draw milk from a female mammal. 挤奶从雌性哺乳动物身上挤奶
- The bat is the only mammal that can fly. 蝙蝠是唯一会飞的哺乳动物。
- Application of Comparative Genomics in Mammalian Evolution Research 比较基因组学在哺乳动物进化研究中的应用
- Dolly was not only the largest mammal ever cloned. 多利不仅是克隆过的最大型的哺乳动物，
- Darwin spend more than twenty year work on his theory of evolution. 达尔文花了二十余年时间研究他的进化论。
- In politics Britain has preferred evolution to revolution. 在政治上，英国喜欢渐进而不喜欢革命。
- A coating similar to the pelt of a mammal. 皮子象哺乳动物毛皮的覆盖层
- Our political institutions are in continuous evolution. 我们的政治制度正在不断发展中。
