求翻译：一个具体的付费机制是否能够在实践中得到有效执行，依赖于利益相关者在费用契约中所确立的经济利益关系是否合理和能够保证付费契约顺利执行的外部环境。是什么意思？

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A specific mechanism for pay-per-view can in practice be effectively implemented and rely on stakeholders in contracts established in the relations between the economic interests of the reasonableness and to ensure the smooth implementation of the pay contractual external environment.

Whether a concrete payment mechanism can obtain the effective execution in reality, relies on in the benefit counterparts the economic interest which establishes in the expense contract relates whether reasonable and can guarantee the payment contract smooth execution the external environment.

Whether a particular payment mechanism can be effectively implemented in practice, depend on stakeholders in the economic interests of costs established in the contract are reasonable and guaranteed pay contracts the smooth implementation of the external environment.

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