Now most of us, and I would say me included, think that human exploitation of the oceans really only became very serious in the last 50 to, perhaps, 100 years or so.
现在我们大多数人，也包括我， 认为人类对于海洋的探索 真正变得严肃起来 也只是最近50年，或许100年的左右的事情。