hydrogen isotope

例句：

1. 1. The study of isotopes has led to new discoveries in the field of physics.
   研究同位素已经导致了物理学领域的新发现。
2. 2.The team used isotopes to trace the movement of the water.
   该团队使用同位素来追踪水的流动。
3. 3.The researcher discovered a new isotope that could be used for medical purposes.
   这位研究员发现了一种新的同位素，可以用于医疗目的。