All together, they are telling us what started as a microbial pathway, and why what started as a microbial pathway sometimes ends up as a civilization or sometimes ends up as a dead end.
所有的加在一起，它们能告诉我们 什么是微生物途径的开端， 以及为什么有时候一些 微生物途径的开端 会最终形成一个文明， 另一些时候则会最终走到尽头。