Natural selection also explains pleasures -- sexual pleasure, our liking for sweet, fat and proteins, which in turn explains a lot of popular foods, from ripe fruits through chocolate malts and barbecued ribs.
自然选择也解释了愉悦-- 性愉悦， 对糖、脂肪和蛋白质的喜爱， 这反过来解释了许多广受欢迎的食物， 从成熟的果实到巧克力糖 和烤排骨。