动物们来到这里,喜欢这里的景色,占据了它们的栖息地,定居下来,繁衍生息。
Animals arrived, liked the look of the place, took up their quarters, settled down, spread, and flourished.
生物学家们长期认为,两类鳍脚亚目动物,即海狮和海象,都是从一种陆地上的类似于熊的动物繁衍而来的。
Biologists have long maintained that two groups of pinnipeds, sea lions and walruses, are descended from response to similar environmental pressures.
它们滞留在住房条件差、安全用水和卫生设施稀缺、环境肮脏以及带病昆虫和动物大量繁衍的地方。
They stay put in areas where housing is substandard, safe water and sanitation are scarce, environments are filthy, and disease-carrying insects and animals are abundant.
And what it does is--one way to reproduce is to occupy other animals and manipulate their bodies so as to expel it.
它繁衍的方式是,占据其他动物并操纵他们的身体,以驱逐他们。
And so, that simple fact is why we would expect animals to care for their children, because children are the means through which genes replicate.
所以,简单的事实是,我们为什么期待动物关心后代,因为后代是基因繁衍的方式。
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