translation.en: And in fact, the modern salamander is very close to the first terrestrial vertebrate, so it's almost a living fossil, which gives us access to our ancestor, the ancestor to all terrestrial tetrapods.
translation.zh: 事实上，现代的蝾螈 和最早出现的陆生脊椎动物十分相近 所以说，蝾螈就像是活化石一样 通过它，我们有机会了解我们的祖先