Scientists think this is the plants' way to prevent the spread of any tree diseases and make life more difficult for leaf-eating insects like caterpillars.
科学家认为，这是植物防止树木疾病传播的方法，并给像毛毛虫之类的食叶昆虫制造些生存上的困难。
2
Research proved that plants sense — and react to — the presence of hungry, leaf-eating worms.
研究表明植物能感觉到饥饿的食叶虫的出现，也能够对此做出反应。
3
Stegoceras was a member of the leaf-eating genus Pachycephalosauria that roamed the Earth around 70 million years ago.