no matter their size. 不论它们的大小如何

298. While their variety is remarkable...
     虽然它们的多样性非同一般
299. each still has that perfect pairing.
     但每一种都具有这种完美的搭配
300. Backbones give them speed and power...
     脊椎使它们拥有速度和力量
301. no matter their size.
     不论它们的大小如何
302. While jaws give them bite.
     而颌则为它们提供了咬的能力
303. But there is more to jaws than that.
     但是颌的作用不止于此
304. Some fish use them to protect their eggs.
     有的鱼用颌来保护自己的卵

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 301 行