There was only one place she could look : the pleistocene .
她只能在一处地方寻找到答案：更新世。
It was formed when glaciers covered this area during the pleistocene epoch .
它形成于更新世年代冰川覆盖该地区的时侯。
If you want to know how promiscuous males were on the pleistocene savanna look at the size ratio of men to women .
如果你想知道在更新世的热带稀树草原男人的滥交程度，看男人与女人的身体大小比率就知道了。
What caused the end of this age , known as the pleistocene , has long been debated .
人们一直在争论是何原因结束了这个叫做“更新世”的时期。
To last " until death do us part " sexual relationships must develop the natural bonds of friendship and affinity that we also evolved on the pleistocene savanna .
