此次大灭绝之前，兽孔目爬行动物（一种类哺乳动物）的数目远远多于恐龙的祖先祖龙。
Until this disaster, mammal-like creatures known as therapsids were actually more numerous than the ancestors of the dinosaurs, known as archosaurs.
此次大灭绝之前，兽孔目爬行动物（一种类哺乳动物）的数目远远多于恐龙的祖先祖龙。
Until this disaster, mammal-like creatures known as therapsids were actually more numerous than the ancestors of the dinosaurs, known as archosaurs.
应用推荐