常见例句Reptiles evolved into three distinct groups: the cotylosaurs, the pelycosaurs, and the therapsids. 爬虫类演化为三个明显不同的类别：杯龙类、盘龙类和兽孔类。cotylosaurn. [古生]杯龙( 一种原始爬行动物) 返回 cotylosaurs