He even saw dragonflies and damselflies mating and laying eggs—at a river that had not existed earlier that day.

他甚至看和豆娘在当天早些候不存在的一条河配和产卵。

Within a few hours, Bogan counted seven different species of dragonflies. He even saw dragonflies and damselflies mating and laying eggs-at a river that had not existed earlier that day.

几小内，博根数出了七种不同种类的。他甚至看和豆娘河里配和产卵，这条河当天早些候还不存在。