Some researchers speculate that they made the best of a bad situation by catching fish, and hunting turtles and waterfowl from the canals.

• 科研人员进一步猜想，认为每遇到情况不妙的时候，他们还能打鱼过日子，会从他们开挖的水渠系统中捕捉一些海龟和水鸟一类的东西。