translation.en: Now, what that means is that all of the organisms that live in the sea have evolved in this chemostatted ocean, with CO2 levels lower than they are today.
translation.zh: 现在，这意味着 所有生活在海洋中的生物都 在这个恒定的海洋中进化， 而其中的二氧化碳浓度低于现在的浓度。