Start a theory to guide practice, after practice, enrich and supplement the theory, so the cycle to reach the two closely integrated and mutually confirmed.
开始是理论指导实践，后又实践丰富和补充理论，如此循环往复，达到二者紧密结合和相互印证。
The primary goal is to identify the areas in which sufficient evidence is available to guide practice, as well as to determine areas that warrant further study.
主要的目标是鉴别哪些领域是有足够的证据可以指导实践，以及决定哪些领域值得进一步研究。
The primary goal is to identify the areas in which sufficient evidence is available to guide practice, as well as to determine areas that warrant further study.
主要的目标是鉴别哪些领域是有足够的证据可以指导实践，以及决定哪些领域值得进一步研究。
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