在本合同有效期内，修改，编写或协助编写教案且不要求报酬。
Revising, writing or assisting in writing teaching materials without demanding any financial request during the valid duration of this contract.
在合同有效期内，改进技术所有权，包括申请专利的权力，属于改进方。
During theduration of a contract, proprietary rights to improvements made to thetechnology, including applications for patent rights, shall belong to the partywhich made the improvements.
第二十条在保险合同有效期内，投保人和保险人经协商同意，可以变更保险合同的有关内容。
An insurer refers to the insurance company which enters into an insurance contract with an applicant and is obligated to make indemnity or payments of the insurance benefits.
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