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.

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.

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.

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.

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.

This petrifaction may be existed over two million years.

这块化石可能存在超过二百万年了。

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.

The fossils may be a million years old.

这些化石可能有100万年了.

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.

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。

fossils over two million years old

两百多万年的化石

Each moment is the fruit of forty thousand years.

每一时刻皆是四万年的结晶.

Dinosaurs have been extinct for millions of years.

恐龙绝种已有几百万年了.

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.

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。