Yet -- (Laughter) when we looked more closely, we saw, in the northern part of Peru, a network of valley systems that was not quite too tall for the bats on either side to be mating with each other.

然而——（笑声）当我们更仔细地观察时，我们看到，在秘鲁北部，有一个山谷系统网络， 它并不太高， 两侧的蝙蝠无法相互交配。