求翻译：Old Age maintenance contract" is a family unit, to lease the form of parents of the child support agreement, the contents of the main requirements of their children in accordance with the law both parents must carry out maintenance obligations to the contract forms for their children's maintenance practices and ways to Supervision.present, the majority of Xinjiang, state and municipal agencies in the area of ageing in the implementation of the "old age maintenance contract", the contract also has in-depth agricultural and pastoral areas in Xinjiang majority of the family.是什么意思？

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