These pictures show young readers what led Darwin to form his great discovery: the evolution of species through natural selection.

VOA: special.2009.02.27

Well, so far we've had two models that have been thrown out to you: From polytheism's worship of many gods there's a natural evolution to henotheism's elevation of one god to a supreme position.

目前，我已经给你们提出了两种模型：,从崇拜众多神灵的多神论,自然进化到一神论,唯一的至高无上的神。

耶鲁公开课 - 旧约导论课程节选

He developed the theory of evolution that life on Earth developed through the process of natural selection.

VOA: special.2009.12.16

The animals on the islands influenced British nature scientist Charles Darwin's ideas about evolution by natural selection.

VOA: special.2009.12.16

A year later,Darwin would complete his detailed study of evolution through natural selection.

VOA: special.2009.12.01

That theory is known as evolution through natural selection.

VOA: special.2009.02.25

On stage,Milner tells the story through music. Darwin's theory of evolution through natural selection inspires some tunes,and episodes in his life inspire others.

VOA: standard.2009.11.25