几百条名叫舞毒蛾的毛毛虫爬满一棵树,它们的利嘴贪婪地大吃着嫩绿的叶子,最后剩下光秃秃的树枝。但奇怪的是,这片山毛榉树林中,只有少数树遭到害虫掠食,而大多数树安然无恙,一片郁郁葱葱。科学家发现许多树木等植物面对“来犯之敌”决不是束手待毙的。 Hundreds of caterpillars called Gypsy moths crawled over a tree. Their beaks greedily ate green leaves and left bare branches. But strangely, only a few of the beech forests were preyed by pests, and most of the trees were unscathed and lush. Scientists have discovered that many trees and other plants do not wait to face the “enemy of the enemy.”