And the original question examined by Charles darwin-what is the mechanism that causes new species to evolve-has yet to be fully explained.
而被查尔斯·达尔文所检验的那个最本初的问题—是什么机制引发了新物种的进化—却尚未完全得到解答。
It obvious that Asean needs to evolve and build a NATO type collective defence mechanism.
东盟需求显然进化和建立一个北大西洋公约组织类型防御机制。
The third part has mainly analyzed the urban fringe area to form and to evolve, including urban fringe area evolution mechanism, forming process analysis and stage type analysis.
第三部分主要是分析了城市边缘区形成和演变，包括城市边缘区的演变机制、形成过程分析和阶段类型分析。
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