我们借助公共性维度的引入，知识的客观有效性问题的解决才具有了现实性。

So, with the help of commonality, we can solve the problem of objective validity of knowledge.

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研究过程中应尽可能采取客观的资料收集方法，多现场进行研究，以提高人种志研究方法的有效性。

Objective material collection ways and on-the-sport research should be adopted in the research process so as to improve the efficiency of ethnography research method.

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测试应具备有效性和可靠性才能达到客观评价学习者能力和检验教学结果的目的。

Testing must have the quality of validity and reliability so as to have the objective evaluation on learners' ability and check the teaching result effectively.

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