| 释义 |
Ordovician/ɔ:dəˈviʃiən/ adj. & n. Geol. 【地质】 ●adj. of or relating to the second period of the Palaeozoic era, with evidence of the first vertebrates and an abundance of marine invertebrates (有关)奥陶纪的(古生代第二纪，以最初的脊椎动物和大量的海洋无脊椎动物为特征) ●n. this period or system 奥陶纪 [Ordovices, the Latin name of an ancient British tribe in N. Wales] |