In order to specify the rights and obligations of both parties, a contract prescribing a time limit shall be signed.

为了明确双方的权利和义务，每个合作项目都应签订有一定时限的合同。

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The book publisher shall bear the civil liability in accordance with the provisions of Article 47 of this Law if he fails to publish the work within the time limit specified in the contract.

图书出版者不按照合同约定期限出版，应当依照本法第四十七条的规定承担民事责任。

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At the same time, it also gives the contract and limit the rights and obligations of the parties to ensure the smooth progress of construction activities, quality and quantity objectives.

同时，它也赋予和限制了合同双方当事人的权利和义务，确保建筑活动顺利进行，保质保量的完成目标。

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