这同样是服务性行业进化中自然的一步——从实体到虚拟——与社会进展的特色极其相似。

It is also a natural step in the evolution of services-from the physical to the virtual-that has characterised much of society's progress.

youdao

在搜索结果中暗藏社交线索，这看上去是搜索历史进程中非常自然的一步，可是用户已经有这么多选择了，他们使用Google + 1的动力何在。

Including social cues in search results seemed like a natural progression of search, but that kept the idea of intention out of the mix.

youdao

需要在更自然的条件下进行进一步研究。

Further research is needed under rather more naturalistic conditions.

《柯林斯英汉双解大词典》