1.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位素。

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

科学家利用放射性同位素，发现树木会分享水和营养给其他有需要的树。

3.Tritium is an isotope of what element? - Hydrogen.

氚是哪个元素的同位素 -氢。

4.Did you secure the isotope from L-Corp?

你安置好L公司的同位素了吗？

5.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位素和氮同位素的比。

6.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。

7.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位素光的比率所得出的结论。

8.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。

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

方面，锶的同位素或形式不止。

10.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位素 但其中的名技术员被咬了。

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

我在说的是我当年想拿来制造核反应堆的镅同位素。

12.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个星球。

13.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位素，以此来证明其才能。

14.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。

15.And animals use each nitrogen isotope slightly differently.

动物对每氮同位素的使用稍有不同。

16.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。

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

些来自月球的岩石含有特殊比的氧原子同位素。

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

狐狸骨头中的碳和氮同位素提供了线索，我们由此可以得知狐狸吃过什么。

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

我往他们的袋子中注射了 含有稳定性同位素碳13的二氧化碳。

20.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位素以及爆炸前后的光学图像。