This “parentalinvestment theory” should apply especially well to humans.
这种“亲代投入理论”尤其可以很好地解释人类行为。
2
It implies huge parentalinvestment in the offspring since, if you lose it, you lose everything.
这意味着父母对后代的巨大投入，因为如果失去后代，你就失去了一切。
3
The scientists concluded that when it comes to settling down, women want a male who is the best parentalinvestment. But when the biological bells are ringing, they want Tarzan's genes.