Even bananas contain trace amounts of a radioactive potassium isotope.

即使是香蕉都含有微量钾的放射性。

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

答案在于地化，这是个不大知名而又十分奇妙的领域。

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

氚这种放射性无法被清除。

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

氮肥改变了泥炭沼泽中化的平衡。

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

有可能这些稀有的部分来自另一个星。

This toxicity is related to what's called the kinetic isotope effect.

这种毒性与所谓的动力效应有关。

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

一方面，锶的或形式不止一种。

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

研究人员让玉米接触带标记的氮，以此来证明其才能。

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

我往他们的袋子中注射了 含有稳定性碳13的二氧化碳。

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

科家利用放射性，发现树木会分享水和营养给其他有需要的树。

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

一种被称为放射性氚的氢会留在水中。

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和碳氧。

Tritium is an isotope of what element? - Hydrogen.

氚是哪个元的 -氢。

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

他们给老鼠注射了放射性 但其中的一名技术员被咬了。

I'm referring to the americium isotopes I was using to make a nuclear reactor.

我在说的是我年想拿来制造核反应堆的镅。

Did you secure the isotope from L-Corp?

你安置好L公司的了吗？

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的性能。

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

一些来自的岩石含有特殊比例的氧原子。

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

因此，研究人员还测量了郊狼胡须中不碳和氮的比例。

Denied. All right, for ten points, What is the lightest element on Earth, with no stable isotope?

驳回。接下来十分题，地上没有稳定的最轻的物质是什么？