实践是检验真理的唯一标准。

Practice is the sole criterion of truth.

实践是检验真理的唯一标准，理论学习的最终目的也是服务于实际应用的。

Practice is the only standard to testify truth, while learning of theory ultimately serves practical application.

“实践是检验真理的唯一标准”这一提法理论上并不完全周延，行动上容易导致经验主义、实用主义。

"Practice is the sole criterion for testing truth", this formulation is not completely comprehensive in theory, and it is easy to cause empiricism and pragmatism in action.