That was because his hypothesis was that if linguistic evolution is jerky, the jerks will happen at the points where languages split-the equivalent of species splits in biological evolution.

因为他假设语言的进化是不平稳的，这种“颠簸”发生在语言的分叉点上——如同在生物进化上的物种分化。

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Their thesis is that, far from arriving at the idea of human evolution from his studies of natural history, Darwin took as one of his starting points the diversification of humanity into "races".

他们主要是希望说明，达尔文最初的起点之一是人类为何会分化出不同"种族"，远非通过对自然历史的研究发现了人类进化理论。

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Images are from three time points and demonstrate the evolution of infarction.

影像摄自三个时间点，显示了梗塞灶的演变。

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Lander and his colleagues say evolution's lab book points to only 30, 000 genes--if a gene is defined as a stretch of DNA that codes for one of the proteins from which the body is built.

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Blank points out that this evolution closely parallels the formation of the movie industry in the early 20th century.

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However, he added that "everything points to a favourable evolution of the situation in Diabaly in the coming hours".

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