总成本（total cost） 社会净效益 （ social net benefit ） 边际效益（marginal benefit） ..
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social net benefit
社会净收益
以上为机器翻译结果，长、整句建议使用 人工翻译 。
"The rule is expected to provide a modest net social benefit (estimated benefits minus estimated costs) to society, " FDA said.
FDA表示，“该规则预计将为社会提供适度的净社会效益（预估效益减去预估成本）。”
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But they benefit from central-government defence spending, and they are net recipients from the social-security system.
ECONOMIST: How much is enough?
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