It was during this period that we see the earliest arthropods, the group that includes modern insects and crustaceans.

正是在这一时期，我们看到了最早的节肢动物，包括现代昆虫和甲壳类动物。

Another factor in the modern insect problem is the spreading of thousands of different kinds of organisms from their native homes.

导致现代昆虫问题的另外一个因素是成千上万种不同种类的生物从它们原来的栖息地向新的区域蔓延入侵。

In fact, paleontologists have managed to make this happen today in the lab, by experimenting with modern insects.

事实上，古生物学家今天已经在实验室中通过对现代昆虫的实验成功地实现了这一目标。

Walcott became a leading authority on trilobites and was the first person to establish that trilobites were arthropods, the group that includes modern insects and crustaceans.

但他成了三叶虫问题的一名重要权威。他最先确定三叶虫是节肢动物，该属包括当代的昆虫和甲壳纲动物。