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Under the system in force, to formulate a public policy must consider the marginal cost and marginal profits about the health of population.
在现行制度安排下，公共政策的制定应考虑人口健康的长期社会边际成本和长期社会边际收益。
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Say tacocopters triple what you can buy with a dollar, but cut the marginal product of a large portion of the population in half.
FORBES: Will Hoverbikes Be More Important Than Tacocopters?
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