They say that well before dinosaurs or, really, much of anything roamed the Earth, rivers were just vast expanses of water heeding only gravity and heading straight to sea.

• 他们认为在恐龙出现以前，或确切地说在任何动物出现以前，河流只是一片宽广的水域，仅在重力的驱使下径直奔向大海。