音標(biāo)發(fā)音英式音標(biāo) [???.d??v??.?n]美式音標(biāo) [???r.d??v??.?n]英式發(fā)音 美式發(fā)音 基本解釋n.奧陶紀(jì)；奧陶系adj.奧陶紀(jì)的同根派生 Ordovician相關(guān)詞英漢例句用作名詞 (n.)This was the result from the large-scale regression in the Late Ordovician.這是奧陶紀(jì)晚期大槼模海退的結(jié)果。Major hydrocarbon source rocks are in the Cambrian and Ordovician.寒武-奧陶系烴源巖是該區(qū)主力烴源巖;Ordovician更多例句英英字典劍橋英英字典 from or referring to the period of time between about 485 and 445 million years ago, in which there were many different types of animals in the sea, including vertebrates (= animals with back bones), but no life on landOrdovician劍橋字典Ordovician柯林斯字典