英语词汇“marginal effectiveness”的翻译、意思、用法、释义-英汉汉英双解词典-爱贷网

词汇	marginal effectiveness
释义	marginal effectiveness 基本例句边际效益 People stop at the point where the marginal cost equals the marginal benefit.当边际成本等于边际效益，就是活动停止的时候。
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