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1·But it's really interesting the studies that he did do with radium bromide, and he was studying the alpha particles.

但他用溴化镭，做的研究十分有意思，他研究的是alpha粒子。

2·So, I mentioned at the beginning, while he was working with this radium bromide that I was very relieved to see that it did not kill him to do these experiments.

我在最开始就说了，由于他工作时接触到了溴化镭，我非常欣慰的，看到它做这些实验。