If only prehistoric promiscuity could be precisely measured !

但愿史前的滥交能精确被测量！

Then why are prehistoric people so often referred to as cavemen ?

那么为什么史前人类被频频称作山顶洞人呢？

My mother playing the piano , my dad 's prehistoric selectric .

母亲弹奏钢琴的声音，父亲史前打字机的声音。

Scientists say the diet of prehistoric humans probably required more chewing teeth .

科学家们表示，史前人类的饮食可能需要更多咀嚼齿。

The findings can also reveal which animals prehistoric humans and human ancestors ate .

这些发现还可能解答史前人类和原始人类吃些什么的问题。