Having existed for three million years, elks became nearly extinct for centuries.

麋鹿具有三百万年的生存历史，却在数百年的时间内几度濒临灭绝。

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Having lived on Earth for three million years, with a reputation of a "living fossil," the pandas are living a harmonious and sweet life in Chengdu city, the only city home in the world.

在地球上生活了二三百万年，有着“活化石”之称的大熊猫，在成都这个世界上唯一的城市家园里，生活甜美，繁衍生息。

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For example, Peter Sheldon' s studies of trilobites, a now extinct marine animal with a segmented body, offer a detailed glimpse into three million years of evolution in one marine environment.

例如，彼得·谢尔登对于三叶虫的研究，那是一种已灭绝的身体分节的海洋生物，他的研究让我们得以一窥三百万年以来一个海洋环境的进化过程。

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For example, permanent populations of Canada geese in North America have increased three hundred percent in eighteen years to four million birds.

VOA: special.2009.04.01

The study showed that pandas have been in existence for up to three million years.

VOA: special.2010.01.19

The Secretary-General said nations and their international partners promised five billion three hundred million dollars for the next two years and almost ten billion dollars in total.

VOA: special.2010.04.02

When combined with data on past sea levels, these give an estimate of global temperatures and sea-ice cover for the past three million years.

BBC: Climate change 'to halt ice age'

The senior set accounts for over 3 million new jobs in the last three years, whereas the 16-54 set accounts for only a little more than 1 million.

FORBES: Improving Employment Picutre Masks Lousy Demographics

Casting herself in the Ted Stevens mold, however, she had proved herself skilled at collecting federal earmarks for Wasilla, bringing in twenty-seven million dollars for her small town in three years.

NEWYORKER: The State of Sarah Palin