translation.en: And when we can understand our human connections with our groundwater and all of our water resources on this planet, then we'll be working on the problem that's probably the most important issue of this century.
translation.zh: 如果我们能够了解人类与地下水， 以及这个星球上其他水资源的联系， 我们就会一起解决这个 可能是这个世纪最重要的问题。