Humans experience a delayed maturity; we arrive at all stages of life later than other mammals.

人类经历着一个迟来的成熟；我们进入生命各个阶段的时间比其他哺乳动物要晚。

《柯林斯英汉双解大词典》

At sea, as on land, humans have now positioned themselves on the top of the whole great pyramid of life, and they have caused serious problems for the mammals of the sea.

在陆地和海洋，人类都已处在巨大的生物金字塔的最顶端，成为所有生物的主宰，并给海洋哺乳动物带来巨大的危胁。

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A massive camera trap survey of tropical mammals around the world has returned a magical series of glimpses into animal life.

一项关于世界各地热带哺乳动物的大规模调查，利用触发式相机呈现出一系列不可思议的动物生活。

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According to the Northwest Marine Conservation Initiative, the nets are responsible for killing tens of thousands of marine life, mammals and birds every year.

CNN: Stimulus money pays fishermen to snare lost nets

Although there is, as yet, no published evidence that sirtuins extend life in mammals, or that resveratrol activates sirtuins in human cells, some of these molecules are already in clinical trials for safety.

ECONOMIST: How to live longer��maybe

In mammals, this kind of epigenetic modification has been assumed to last only during the life span of a particular animal, because such changes are usually erased in the sperm and egg cells.

ECONOMIST: Genes are not all there is to heredity