although they are not all as terrifying as their ancestors. 虽然它们并非都像祖先那般可怕

137. This...
     这个时代
138. ...was the age of reptiles.
     属于爬行动物
139. Today, there are more than 10,000 species of reptile...
     如今有超过一万种爬行动物
140. although they are not all as terrifying as their ancestors.
     虽然它们并非都像祖先那般可怕
141. As the Earth has changed...
     随着地球的变化
142. ...reptiles have had to adapt to an ever more crowded world.
     爬行动物 不得不适应一个越来越拥挤的世界
143. And the tough, scaly skin that allowed them to conquer the deserts of Pangaea,
     使它们征服盘♥古♥大♥陆♥的坚韧鳞片皮肤

来自《我们星球上的生命 第一季 第四集 Life on Our Planet S01E04 冷血动物》第 140 行