noun🔗Share三叶虫 An extinct arthropod of the class Trilobita, whose body had three large lobes."While studying fossils in class, Sarah learned that a trilobite is an ancient sea creature with a body divided into three distinct parts. "萨拉在课堂上研究化石时了解到，三叶虫是一种古老的海生生物，它的身体明显地分为三个部分。archaeologyanimalbiologygeologyorganismsciencehistoryChat with AIVocabulary GamePractice Reading
