进化阶段 meaning in English

phylogenetic scale

We cannot be certain that gonium, pandonina, eudonna, and pleodorina represent stages in the evolution of multicellular volvox from unicellular chlamydomonas .
我们不能肯定盘藻、实球藻、空球藻和杂球藻代表从单细胞衣藻到多细胞因藻的各进化阶段。
They are a superb illustration of the key stages of evolution of australia ' s unique fauna
它们完美地展示了特殊的澳大利亚动物群的各个进化阶段。
In conclusion , this study pieces together the different chapters of the complete evolutionary story of the sars - coronavirus and represents a significant milestone in the understanding of sars
总结而言，这项研究集结sars冠状病毒的不同进化阶段，亦为sars研究中写下新的一页。
As we presented in the paper , with the evolution procedure accomplished of neurons from the single - celled organisms and multicellular animals that lack nervous system , the evolution course of nervous system could be summarized briefly as : chaos phase , equally nerve net , centrilized network phase and bilateral symmetry , hierarchical organization and cephalization phase
研究表明，从原始的单细胞有机体类似神经动作电位的协调功能逐步进化成神经元开始，神经系统大致经历了混沌阶段、平权网络阶段、中心化网络阶段和双侧对称的层次体系结构等进化阶段。