If people are pleasuring each other in many different ways , enough procreative sex will occur to propagate the species .

如果人们以各种不同方式使双方愉悦满意，充足的生殖性行为就会使得这个物种更好地繁衍下去。

Cave art illuminates some of the truths of the prehistoric world : that buffalo meat made a great dinner ; that women seemed magically procreative ; that the parts of the lion to watch out for were its head and mouth .

洞穴艺术显露出了史前世界的一些真相：野牛肉让晚餐变得丰盛；女人似乎具有不可思议的生育能力；狮子的脑袋和血盆大口引人注目。