the vertebrates would never look back. 脊椎动物将永不回头

292. But the adult's are.
     但成年邓氏鱼可以
293. The pairing of backbones with jaws was to prove a winning combination.
     颌搭配脊椎是胜利的组合
294. So perfect that, from this moment on,
     如此完美 以至于从这一刻开始
295. the vertebrates would never look back.
     脊椎动物将永不回头
296. Today, there are more than 30,000 species of fish.
     今天存在超过三万种鱼
297. Forty times as many as the cephalopods.
     是头足动物的40倍
298. While their variety is remarkable...
     虽然它们的多样性非同一般

来自《我们星球上的生命 第一季 第二集 Life on Our Planet S01E02 第一前线》第 295 行