Ultimately, women have more at stake while dating because they face higher "sunk costs" — a woman can carry the child of only one man at a time, while a man can impregnate many women.
结果就是，女人在约会中获得了更多的筹码，因为她们“失败的代价”更高——一个女人一次只能怀一个男人的孩子（译者：基本上如此，当然也有特例，双胞胎不同父），而男人可以让很多女人怀孕。
Ultimately, women have more at stake while dating because they face higher "sunk costs" — a woman can carry the child of only one man at a time, while a man can impregnate many women.
结果就是，女人在约会中获得了更多的筹码，因为她们“失败的代价”更高——一个女人一次只能怀一个男人的孩子（译者：基本上如此，当然也有特例，双胞胎不同父），而男人可以让很多女人怀孕。
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