More than 300 million years ago, 3亿多年前

140. She prefers to wait for prey to come to her.
     它更喜欢等待猎物靠近
141. In the battle of the arthropods,
     在节肢动物的争斗中
142. flight would often make the difference between life and death.
     飞行往往能决定生死
143. More than 300 million years ago,
     3亿多年前
144. one group of arthropods
     一群节肢动物
145. were the first creatures to take to the skies.
     成为率先上天的生物
146. And the evolution of wings
     翅膀的进化

来自《我们星球上的生命 第一季 第三集 Life on Our Planet S01E03 入侵大地》第 143 行