| 单词 | 三迭纪 |
| 释义 | 〔thecodont〕Any of various extinct primitive archosaurs of the order Thecodontia of the late Permian and Triassic periods, having teeth in sockets and probably ancestral to the dinosaurs.槽齿类：二迭纪和三迭纪晚期槽齿目几种已灭绝的原始初龙，牙槽中有牙齿并且可能是恐龙的祖先〔therapsid〕Any of various reptiles of the order Therapsida of the Permian and Triassic periods, many of which are considered to be direct ancestors of mammals.兽孔类：二叠纪和三迭纪的兽孔类爬行动物中的一种，它们中的许多种被认为是哺乳动物的直接祖先 |
| 随便看 |
英汉汉英双解词典收录301015条英汉双解翻译词条，可根据汉字查询相应的英文词汇，基本涵盖了全部常用汉字的英文读音、翻译及用法，是英语学习及翻译工作的有利工具。