translation.en: So there's all of this complexity in our natural systems, but they're extremely efficient, far more efficient than anything we can build, far more complex than anything we can build.
translation.zh: 这就是我们 自然系统的复杂性， 但它们非常高效， 比我们建造的任何东西都要高效， 比我们能建造的任何东西都要复杂。