伟大的理论来自伟大的实践，同时对实践具有指导作用。
Great theory comes from great practice and plays an important role in guiding practice.
论文作者在谈论施工索赔策略时列举大量案例，试图将理论与实践有机结合起来，希望对工程承包商在索赔管理方面具有指导作用。
By combining the relevant theories and practices vividly together, the author take lots of cases about construction claims for example and hope that it works for contractors to manage claims.
有效性教学理论对实践具有强大的指导作用。
The effective teaching theory has strong guidance functions to practice.
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