但是，在原食草植物吃浮游植物在这个大小范围。
However, protozoan grazers feed well on phytoplankton in this size range.
食草恐龙的主要食物可能是马尾草，这是一种类似于蕨类的植物，在史前的沼泽地带大量存在，营养丰富。
A staple part of the vegetarian dino-diet was probably horsetails, fern-like plants that were abundant in prehistoric swamps and highly nutritious.
橡胶形成的进化目的，以及橡胶之所以分别出现在橡胶树、银胶菊、蒲公英等各种各样的植物中的原因，在于它能黏住食草昆虫的口器。
The evolutionary purpose of rubber, and the reason why it has appeared independently in plants as diverse as trees, guayule and dandelions, is that it gums up the mouthparts of herbivorous insects.
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