Well, I spent most of the afternoon growing isotopically pure crystals for neutrino detection.

我整个下午都忙着在生成同位素纯水晶来探测微中子。

And methane from such sources is isotopically similar to methane that comes from wetlands.

来自这些来源的甲烷在同位素上与来自湿地的甲烷相似。