noun 下载 🔗分享 三叶虫 An extinct arthropod of the class Trilobita, whose body had three large lobes. Examples : "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。 geology archaeology animal biology science history organism 与AI对话词汇游戏阅读练习
