差异
Diversity is the future. We're all different, and those differences make us stronger.
Women know life too late. That is the difference between men and women.
Parental investment is the key to understanding sex differences in mating strategies.
"Parental investment is the key to understanding the origins of sex differences."
"Men and women differ in their desires for short-term mating because the reproductive benefits and costs differed for our ancestors."
