trilobite是什么意思音标:英 [ˈtraɪləʊbaɪt]美 [ˈtraɪləˌbaɪt]

n. 三叶虫

n. an extinct arthropod that was abundant in Paleozoic times; had an exoskeleton divided into three parts

trilobite的用法和例句：

1.It happened to the trilobites, to the tetrapods, and then to the therapsids and the archosaurs and the dinosaurs, and guess what.

三叶虫 四足动物灭绝了 然后兽孔目动物 古蜥也灭绝了 恐龙也一样 猜猜怎么着