Like layers of enamel in teeth, otoliths grow in tiny rings, adding a new one each season.

就像牙齿层层釉质，石会呈小小环圈生长，每上新圈。

The outermost ring suggests when a fish was caught. The otoliths found in Gobero's middens indicate the fish were caught throughout the year.

最外侧圈表只鱼遭捕捉时间。在格伯托贝冢找石，显这里全年都在捕鱼。

Sereno has found other evidence that implies people lived year-round at Gobero. His teams have collected otoliths, the bony structures from the inner ears of fish.

塞雷诺还发现了别证据，显有人常年住在格伯托。他团队收集石，这是鱼类内骨质构造。

And inside of each of those little hula hoop-like tubes, there are little stones called otoliths, okay, you heard that word earlier, that roll around on the bottom, just like marbles at the bottom of a hula hoop.

在每个类似呼拉圈小管子里，有些叫做石小石头，这些石会在底部滚动，就像呼拉圈底部弹珠样。