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，发现树木会分享养给其他有需要的树。

Did you secure the isotope from L-Corp?

你安置好L公司的同了吗？

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氮同的比例。

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的平衡。

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。

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

一方面，锶的同或形式不止一种。

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.

研究人员让玉米接触带标记的氮同，以此来证明其才能。

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

约翰逊的团队分析了硬化洞穴滴中的微量元碳氧同。

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铷中发现的不同同的性能。

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.

一些来自月球的岩石含有特殊比例的氧原子同。

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

我们用氮的同来判断古代降雪时的温度。

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

狐狸骨头中的碳氮同提供了线索，我们由此可以得知狐狸吃过什么。

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

我往他们的袋子中注射了 含有稳定性同碳13的二氧化碳。

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的同以及爆炸前后的光学图像。

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

在排放污之前，经过过滤以去除同，只留下难以分离的氚。