Their bodies had been totally taken over by another organism, a bacterium, that had figured out how to replicate photosynthesis in the dark, through a process we now call chemosynthesis.
它们的身体已整个的被 另一个生物体——细菌接管，这就解决了一个问题： 如何在黑暗中，通过我们现在叫做化学合成 的过程代替光合作用。