The catastrophic failure of the two dams impacted  more than 2,500 structures and caused more than 200-million-dollars in damage.

两座大坝的灾难性溃决影响了 2,500 多座建筑物，造成了超过 2 亿美元的损失。

There is also evidence that slavery existed in ancient Celtic culture, although it's  difficult to know to what extent it impacted the overall social structure.

还有证据表明，古代凯尔特文化中存在奴隶制，尽管很难知道它在多大程度上影响了整个社会结构。