translation.en: But that's just a very small facet of a much greater problem of invasions of species worldwide, all through the ecosystems, and you know, the Earth itself -- CA: Partly caused by us, inadvertently.
translation.zh: 但相对于全世界各个生态系统的物种入侵这个更大的问题来说， 那只是很小的一个方面， 你知道，地球本身—— CA：部分原因是我们造成的，并且是无意的。