Which is not only a theory problem but also a practical problem.

这既是一个理论问题，也是实践中时有出现的问题。

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However it faces the unavoidable theory problem in modern circumstances.

然而在现代境遇中它却面临着不可避免的理论难题。

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This paper discusses the general theory problem of post-disaster recovery of urban earthquake.

本文研究了城市地震灾后恢复的一般理论问题。

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Studies support the theory that there are several causes, instead of a single environmental cause or genetic problem.

VOA: special.2009.01.06

In fact,so what we see is,the body theory is in exactly the same problem, exactly the same situation,as the personality theory.

事实上，从我们所见能得出，肉体理论，和人格理论具有一样的问题和情况。

耶鲁公开课 - 死亡课程节选

A big problem with this is a lot of Freudian theory is claimed to be validated in the course of psychoanalysis.

这里存在的一个大问题便是,精神分析理论中的很多内容,被认为是能够在精神分析的过程中,得到证实的。

耶鲁公开课 - 心理学导论课程节选

For instance Feast attendees might apply design thinking or game theory to a problem.

FORBES: NYC Feast to International Social Innovation Community

Disproving the Rahm Emanuel theory of the problem, guns purchased elsewhere can enter New York as easily as they do Chicago.

WSJ: Jenkins: Gun Control That Works

Only one man, though, seriously tried to systematize innovation to the point where it could be taught: The Soviet patent examiner Genrich Altshuller came up with TRIZ, the Russian acronym for Theory of Inventive Problem Solving.

FORBES: Magazine Article