求翻译：此项证明文件应由 事故发生地区的有权证明的机构出具。按照事故对履行合同影响的程度，由双方协商决定是否解除合同，或者部分免除履行合同的责任，或者延期履行合同。是什么意思？

This document should be issued by the right to prove the agency of the accident region. Decide whether to cancel or partially exempt from the responsibility to perform the contract, or an extension to fulfill the contract by both parties in accordance with the extent of the accident on the performan

This document should be made by an accident has the right to prove that the area of the body. According to accident to the extent of the impact performance of the contract agreed to by both parties to decide whether or not the contract, or partial exemption from the execution of the contract extensi

This item of certificate document should have the area by the accident to be authorized proof organization writing up.To fulfills the contract influence according to the accident the degree, consults by both sides decided whether terminates a contract, either part absolution fulfillment contract res

This certificate should be issued by the institution of the region have the right to prove that the accident happened. In accordance with the extent of the impact on the performance of the contract, the consultations between the two sides to decide whether the contract, or partially exempt from perf

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