noun🔗Share三叶虫 An extinct arthropod of the class Trilobita, whose body had three large lobes."During our class field trip to the museum, we saw fossils of trilobites, ancient sea creatures easily identified by the three distinct lobes running lengthwise down their bodies. "在博物馆的课堂实地考察中，我们看到了三叶虫的化石，这些远古海洋生物很容易辨认，因为它们身体纵向有三个明显的分叶。geologyarchaeologyanimalbiologysciencehistoryorganismChat with AIVocabulary GamePractice Reading
