Natural-rights, laissez-faire libertarians always confront several problems or lacunae in their theory. One is taxation.

持自然权利论和无为而治思想的自由意志主义者们总是无法回避他们理论中的一些问题或空白点，其中之一就是税制。

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The Freudian theory about daughters falling in love with their father has little evidence to support it.

弗洛伊德关于女儿恋父的理论没有什么证据来证实。

《柯林斯英汉双解大词典》

In molecular orbital theory, we named orbits based on their symmetry.

在分子轨道理论中，我们基于轨道的对称性给它们命名。

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So in molecular orbital theory, what we did was we named orbitals based on their symmetry.

在分子轨道理论中，我们基于轨道的对称性给它们命名。

麻省理工公开课 - 化学原理课程节选

So, the theory might well be that they were driven away from their old homes in the southern Peloponnesus, and went up to the northern Peloponnesus.

根据理论他们可能被驱逐出故乡,离开伯罗奔尼撒南部,迁往伯罗奔尼撒北部

耶鲁公开课 - 古希腊历史简介课程节选

We want to make sure that if the students would not to be given the time out to learn, we need to provide a vehicle or that they can take the advantage of learning in their world context to actually put the theory into practice.

为了确认学生是否会,腾出时间学习，我们需要提供一个工具,让他们在生活的情境中,利用学习,将理论用于实践。

麻省理工公开课 - 媒体、教育、市场课程节选

She's supposed to be going to the hospital, if she picked up the gifts in their theory -- and placed the box under her bed.

CNN: Transcript: White House Deputy Counsel Mills' statement

The flaw in their theory was that forests need periodic episodes of destruction to clear out old growth and dead wood so that new, more vigorous growth can flourish.

FORBES: The Wages Of Bernanke: Winners And Losers From QE3

If share prices do not recover, many indebted new black tycoons will be unable to meet their repayment deadlines and their shares will in theory revert to their creditors.

ECONOMIST: Paper lions