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同位素会留在水中。

To make it work, we'd need two specific hydrogen isotopes.

为了让它发挥作用， 我们需要两种特定的氢同位素。

For example, one study looked at the ratios of nitrogen and hydrogen isotopes in the protein called collagen found in Condor bones from the La Brea Tar Pits.

例如，一项研究研究了在拉布雷亚焦油坑的神鹰骨骼中发现的一种叫做胶原蛋白的蛋白质中氮和氢同位素的比率。

Hydrogen isotopes, like tritium or deuterium, typically repulse one another when they are ionized and given a positive charge; but with  enough kinetic energy, they can overcome their repulsion and fuse into a larger atom of  helium.

氢同位素，如氚或氘，在电离并带正电荷时通常会相互排斥。但只要有足够的动能，它们就可以克服斥力并聚变成更大的氦原子。