Even bananas contain trace amounts of a radioactive potassium isotope.

即使是香蕉都含有微量钾的性同位素。

Did you secure the isotope from L-Corp?

你安置好L公司的同位素了吗？

For one thing, there's more than one isotope — or form — of strontium.

一方面，锶的同位素或形式不止一种。

Using radioactive isotopes, scientists discovered that trees share water and nutrients with others in need.

科学家利性同位素，发现树木会分享水和营养给其他有需要的树。

A radioactive isotope discovered by Marie Curie in .

后来曾被来暗杀亚力山大•利特维年科。

So the researchers also measured the proportions of different carbon and nitrogen isotopes in whiskers from coyotes.

因此，研究员还测量了郊狼胡须中不同碳同位素和氮同位素的比例。

I injected the stable isotope carbon-13 carbon dioxide gas.

我往他们的袋子中注了 含有稳定性同位素碳13的二氧化碳。

A radioactive isotope called tritium will remain in the waste water.

氚这种性同位素无法被清除。

The researchers base their argument on the ratios of light to heavy nitrogen isotopes in ancient rocks from Australia.

研究员是根据澳大利亚古老岩石中重氮同位素光的比率所得出的结论。

They examined fluids seeping out of fractures in a mine and found particular isotopes of the noble gas xenon.

他们查看从矿井裂缝中渗出的液体，从中发现了惰性气体氙的特殊同位素。

The answer lies in a slightly obscure but ingenious field known as isotope geochemistry.

答案在于同位素地球化学，这是个不大知名而又十分奇妙的领域。

Nitrogen fertilisers have altered the balance of chemical isotopes in peat bogs.

氮肥改变了泥炭沼泽中化学同位素的平衡。

A level of the hydrogen isotope called radioactive tritium will remain in the water.

一种被称为性氚的氢同位素会留在水中。

They were injecting rats with radioactive isotopes and one of the techs got bit.

他们给老鼠注了性同位素 但其中的一名技术员被咬了。

It's possible some of the more exotic isotopes of oxygen came from the other planet.

有可能这些稀有的同位素部分来自另一个星球。

The researchers demonstrated the corn plants' talent by exposing them to labeled isotopes of nitrogen.

研究员让玉米接触带标记的氮同位素，以此来证明其才能。

Johnson's team analyzed trace elements and carbon and oxygen isotopes in the hardened cave drippings.

约翰逊的团队分析了硬化洞穴水滴中的微量元素和碳氧同位素。

The process involved studying the behaviors of different kinds of isotopes found in potassium and rubidium.

这个过程涉及研究在钾和铷中发现的不同同位素的性能。

Some rocks from the Moon show a peculiar ratio of different kinds of oxygen atoms, called isotopes.

一些来自月球的岩石含有特殊比例的氧原子同位素。

We use the isotopes of nitrogen to tell ancient temperature at the time the snow was falling.

我们氮的同位素来判断古代降雪时的温度。