an extinct arthropod that was abundant in Paleozoic times; had an exoskeleton divided into three parts
双语例句
1. Two others of these trilobite fossils have been found in the same area.
在同一地区还发现了另外两块这些三叶虫化石.
来自辞典例句
2. MEI Shi - long , 1991 . Middle and Late Cambrian conodont and trilobite biostratigraphy in Wanxian, Hebei . Unpublished Ph. D thesis of Peking University.
武桂春, 2003. 鲁西地区晚寒武世牙形石. 北京大学博士研究生学位论文.
来自互联网
用作名词 (n.)
The Trilobite can clean a room on its own, using sound waves to feel its way around. 三叶虫可以利用声波探路,从而自己打扫房间。
