With a combination of microscopic view and macroscopic view, theory and practice, present and future, the author tries to make his research theoretical, instructive and practical.

本文旨在从宏观与微观、理论与实践、当前与长远的结合上探讨这一问题，使研究具有一定的理论性、指导性和操作性。

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There is a time-lag between theoretical research and practical applications.

理论研究和实际应用之间存在时滞。

《柯林斯英汉双解大词典》

The impact of Dirac's discoveries at the fundamental level has been far reaching, since even now our research in theoretical physics is guided by Dirac's ideas and his formulations.

狄拉克诸多发现在基础理论已经具有深远影响，即便是现在，我们在理论物理方面的研究都是由狄拉克的思想和他的表示法引导的。

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This is where theoretical research from the lofty heights of the academy meets the contentious real world.

FORBES: Magazine Article

The highest calling of academics is the theoretical research that wins them the admiration of their colleagues and secures the votes of tenure committees.

ECONOMIST: The father of invention | The

For Thursday's report to become anything more than a piece of theoretical research, its recommendations will need to be embraced not just by UK ministers and the devolved governments, but by the EU and crucially the industry itself.

BBC: NEWS | UK | Politics | 'Dismay' at proposed fishing reforms