在自然界，生物多样性的增加与整个系统更高的生产力密切相关。

In the natural world, increased biodiversity is closely correlated with higher whole-system productivity.

youdao

由于铝总是和其他元素结合在一起，所以在自然界中找不到游离的铝。

Nowhere in nature is aluminum found free, owing to its always being combined with other elements.

youdao

原因很容易理解：在自然界中，现存的生物要么适应环境，要么被新物种取代。

The reason for this is easy to recognise: in nature, the existent organisms either adapt or are regularly replaced by new types.

youdao

Again, these plasmids occur naturally in nature; they were discovered particularly in micro-organisms have plasmids that confer biological properties onto them.

此外,质粒存在于自然界中,质粒是在微生物中发现的,它们也赋予了微生物一些生物学特性

耶鲁公开课 - 生物医学工程探索课程节选

If evolution is survival of the fittest, nature red in tooth and claw, how could animals evolve moral feelings?

如果进化论是讲适者生存，在弱肉强食的自然界，动物怎么能进化出道德情感？

耶鲁公开课 - 心理学导论课程节选

For my perspective, even if you understand God to be the creator of the world, I don't think that means that God is causing a certain natural event to happen at certain time.

从我的角度来说，即使你明白,上帝是世界的创造者，但这并不意味着上帝,导致了某个自然界的现象在特定的时间发生。

普林斯顿公开课 - 人性课程节选