translation.en: So the salamander swims by doing what's called an anguilliform swimming gait, so they propagate a nice traveling wave of muscle activity from head to tail.
translation.zh: 即四足动物的祖先 蝾螈以所谓的鳗形游泳的步态 在水中游动 因此肌肉活动产生的优美行波从头部传到尾部