run wild. 放纵不羁

121. And armor plating for battle.
     还有后备护甲板
122. Variation after variation,
     不断变异
123. arthropods are evolution
     节肢动物的进化
124. run wild.
     放纵不羁
125. Including the greatest runner of them all,
     包括其中最出色的奔跑者
126. the tiger beetle.
     虎甲
127. Its design has been fine-tuned over millions of years.
     它的设计经过了数百万年的精心调整

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 124 行