Even bananas contain trace amounts of a radioactive potassium isotope.

即使是香蕉都含有微量钾放射性同。

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

科学家利用放射性同，发现树木会分享水和营养给其他有需要树。

Did you secure the isotope from L-Corp?

你安置好L公司同了吗？

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同碳同和氮同比例。

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平衡。

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

研究人员是根据澳大利亚古老岩石中重氮同光比率所得出结论。

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液体，从中发现了惰性气体氙特殊同。

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同 但其中一名技术员被咬了。

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

有可能这些稀有同分来自另一个星球。

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

研究人员让玉米接触带标记氮同，以此来证明其才能。

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

约翰逊团队分析了硬化洞穴水滴中微量元和碳氧同。

A radioactive isotope discovered by Marie Curie in .

后来曾被用来暗杀亚力山大•利特维年科。

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

一些来自月球岩石含有特殊比例氧原子同。

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

我们用氮同来判断古代降雪时温度。

The carbon and nitrogen isotopes in the fox bones supplied clues to what the foxes had eaten.

狐狸骨头中碳和氮同提供了线索，我们由此可以得知狐狸吃过什么。

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

我往他们袋子中注射了 含有稳定性同碳13二氧化碳。

He says they can also measure isotopes in the air, as well as optical images pre- and post-explosion.

他表示他们还可以测量空气中同以及爆炸前后光学图像。

Before being released, the water is filtered to remove isotopes, leaving only tritium, which is difficult to separate.

在排放污水之前，水经过过滤以去除同，只留下难以分离氚。

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

氚这种放射性同无法被清除。

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

答案在于同地球化学，这是个不大知名而又十分奇妙领域。