万年

For 50 million years, the rhinoceros, that unbeautiful but unique beast, has survived.

犀牛, 这种虽不美丽但独特的动物, 已存活繁衍了五千万年.

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Molecular biologists, however, reckoned 5 m years a better estimate.

然而分子生物学家则认为500万年前比较确切.

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The fossils may be a million years old.

这些化石可能有100万年了.

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You have stuff in the freezer since the beginning of time.

你的电冰箱存着一万年前的食物.

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Some European caves, famous for their thirty-thousand-year old paintings, have already been closed.

欧洲有一些以有三万年历史的古画而著称的洞窟已经关闭了.

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Scientists can also trace makeup back 10,000 years to ancient Egypt.

科学家还可以将化妆追溯到一万年前的古代埃及.

超越目标英语 第4册

It was dated by the potassium-argon method to 1. 8 million years old.

由钾 ― 氩法测定其年龄为180万年.

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Scientists believe that man diverged from the apes between 5 and 7 million years ago.

科学家们相信人类是在500至700万年前由类人猿分化而来。

《柯林斯高阶英汉双解学习词典》

Otters are believed to have been on Earth for 90 million years.

水獭被认为存活在地球上已经9千多万年.

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Beginning nearly 10,000 years ago, man adopted animal husbandry practices.

约在一万年以前, 人类就开始从事畜牧业的工作.

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Dinosaurs have been extinct for millions of years.

恐龙绝种已有几百万年了.

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Each moment is the fruit of forty thousand years.

每一时刻皆是四万年的结晶.

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Fossil hunters have unearthed the bones of an elephant believed to be 500,000 years old.

化石搜集者们发掘出了一具大象骨骼，据信距今已有50万年。

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This petrifaction may be existed over two million years.

这块化石可能存在超过二百万年了。

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fossils over two million years old

两百多万年的化石

《牛津高阶英汉双解词典》