Staying in the ocean and evolving in the ocean for 2 billion years, finally came out onto the land. And then of course it had great -- much greater freedom, and a much greater variety of creatures developed on the land than had ever been possible in the ocean.
20億年間 海の中で生活し 進化して -- やっと陸上にでてきた後には もちろん 前よりもはるかに自由になって 海の中なら考えられなかったほど 多様な生き物に進化しました