Geigl and her colleagues looked at 3200-year-old fossil bones belonging to a single individual of an extinct cattle species called an aurochs.

盖格尔和她的同事们研究了3200年前的骨头化石，这些骨头属于一种已经灭绝的叫做欧洲野牛的种类。

youdao

Back in 1995, he extracted it from a 45 million-year-old fossil.

1995年，他从一块四千五百万年前的化石中提取了这种微生物。

youdao

Scientists have found a 67 million-year-old fossil of a snake coiled around dinosaur eggs and a hatchling.

科学家在一块6700万年的化石中发现了一条蛇盘绕在恐龙蛋和一只幼仔周围。

youdao

It is exciting to stand only a few meters away and watch scientists clean the asphalt off a fossil that is thousands of years old.

VOA: special.2010.04.07

Humans burning old fossil fuels spew out carbon-12, which is NOT radioactive.

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Old school fossil fuels.

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Inefficient energy use is what's bad for the economy, as is the collateral damage in terms of pollution, erosion of water resources, and international security that accompanies old-school fossil fuel and nuclear solutions on the supply side.

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