实践结果何以能成真理的尺度或标志？
How can the result of practice be the only and last measure of truth?
在什么条件下，实践结果才能成为真理的尺度或标志？
In what conditions the result of practice can be the measure of truth?
实践结果是检验认识真理性的唯一最终的尺度或标志，这是什么意思？
What is the meaning that the result of practice is the only and last measure or mark of truth?
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