求翻译：庇古认为存在外部不经济的情况下，可以通过对生产征收相当于最优产量时私人边际成本与社会边际成本差额的税收或污染费是什么意思？

Pigou think the existence of external economic circumstances, equivalent to the private marginal cost and marginal social cost difference between the optimal yield tax or pollution charges can be levied on production

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Shields ancient thought exterior the existence in the uneconomical situation, may through to produce the collection is equal to the most superior output when the personal marginal cost and the society marginal cost difference tax revenue or the pollution expense

Pigou noted that under the external non-economic conditions can be imposed on the production equivalent of optimal yield balance of private and social marginal costs when marginal cost of taxes or pollution fees

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