A useful theory, in addition to explaining past observations, helps to predict events that have not as yet been observed.

一个有用的理论，除了能够解释过去的观测，还有助于预测那些未被观测到的事件。

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In addition, the system can also forecast the danger state of certain unit by grey prediction theory.

除此之外，本系统还可以用灰预测理论对某一单元的危险状态进行预测。

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In addition, as tourism planning is a new field, theory always falls behind practice and an integrated planning theory system has not been established.

另外，由于我国旅游规划还是一个新兴领域，旅游规划实践的理论总结也明显滞后，没有形成一套完整的规划体系。

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Now in addition to defining literature, literary theory also asks questions obviously not unrelated but which open up the field somewhat.

除了定义文学以外，文学理论还提出一些,显然不是不相关，却开辟了新领域的问题。

耶鲁公开课 - 文学理论导论课程节选

In addition, the theory of homeopathy actually defies conventional scientific understanding--in particular, the law of mass action, which demands that the rates of chemical reactions be proportional to the concentrations of substances involved.

FORBES: Homeopathic Medicine Is Homeo-Pathetic

In addition to blazing the trail in econometric theory, Messrs Heckman and McFadden put their new tools to work in a variety of applied microeconomic fields.

ECONOMIST: Economics focus

The answer as to why this was so is I think to be found in Table 7 (page 39) of that paper with the addition of a little bit of economic theory.

FORBES: The United States Used to be the Most Equal Country in the World: What Happened?