Now, as far as radioactive things go, tritiated water is pretty weak.

现在，就放射性物质而言，氚化水相当弱。

But because tritiated water is used in nuclear reactors, the real concern is when those reactors leak, or if there's an accident.

但由于含氚水会用于核，正值得关注的是如果这些发生泄露，或出现事故。

But because tritiated water is used in nuclear reactors, the real concern is when those reactors leak, or if there’s an accident.

但由于核中使用了氚化水， 正令人担忧的是这些何时泄漏，或者是否发生事故。

Scientists don't actually have a great sense of how dangerous tritiated water is, they're not just like putting it in cups and having people try it, but they assume exposure isn't good.

实际上，科学家们并没有强烈地意识到含氚水有多危险，他们不只是把它放进杯子里，让人们尝尝，还认为与其接触无大碍。