求翻译：经双方协商一致，可对本合同进行修改。签定补充协议，补充协议与本合同具有同等效力，在修改文件生效前，双方仍应按本合同规定的内容履行是什么意思？

By mutual consensus, you can make modifications to this contract. Sign supplemental agreements, supplementary agreements and contracts have the same effect in the modified files before the entry into force, both sides should still be required by this contract the content of discharge

As agreed by the parties to this contract may be modified. Supplementary Agreement signed an additional agreement has the same effect with this contract prior to the entry into force, the modification of a file, the two sides continue to be governed by the provisions of this contract performance con

Consults unanimously after both sides, may carry on the revision to this contract.The evaluation subsidiary agreement, the subsidiary agreement has the same level potency with this contract, in before the amendment file activation, both sides still should according to this contract provision content

By mutual consensus, you can make modifications to this contract. Sign supplemental agreements, supplementary agreements and contracts have the same effect in the modified files before the entry into force, both sides should still be required by this contract the content of discharge

By mutual consensus, you can make modifications to this contract. Sign supplemental agreements, supplementary agreements and contracts have the same effect in the modified files before the entry into force, both sides should still be required by this contract the content of discharge