It is an effective solution of solving problem that making the eternalness of knowledge-spilling effect intrinsic and containing eternal profit or cost in certain economic relation.
解决问题的有效途径是将知识溢出效应的外部性内在化，通过某种方式将外部收益或成本内含于某种经济关系中。
It is an economic relation which credit receiver promises to return money afterwards according to certain conditions but gets goods and service first.
它是受信人承诺事后按约定期限和其它条件还款而先行获取授信人商品和服务的一种经济关系。
The natural properties of mineral resources grant it the object of the legal property or legal relation under certain economic or technological conditions.
矿产资源的自然属性决定了其在一定的经济技术条件下才能成为具有法律属性的物即法律关系客体。
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