40. Well, hmm we really don't know a lot about how long a wood frog normally lives probably just a few years.

嗯，我们现在还没有研究清楚一只林蛙正常情况下会存活多久，有可能是几年。

Well, hmm, we really don’t know a lot about how long a wood frog normally lives, probably just a few years but there is no evidence its longevity.

A：嗯，嗯，我们真的不太了解林蛙的正常寿命，可能只有几年，但没有证据表明它长寿。