at our peril这个词组在下面这句话里面怎么理解?

问题描述:

at our peril这个词组在下面这句话里面怎么理解?
And given that the Palaeolithic ended only an evolutionary blink of an eye ago,we ignore its legacy at our peril.

关于peril这个单词,美国传统英英词典上有这么一个解释:Exposure to the risk of harm or loss.
这里我想peril就是取loss的意思,即重大的损失.Exposure to the risk of harm or loss.这句话是什么意思?暴露于某种伤害或损失的风险中