This time, in our seasonal forests, why does this lynx need a caterpillar?

这一集，在季节性森林里为什么这猞猁会需要毛毛虫？

But there is one more relationship, crucial to seasonal forests all around the world, when it comes to surviving constant change.

但是这里还有一种联系对世界各地的季节性森林来说都很重要，这种联系使森林在不断的变化中能获得生存。