This finding bolsters the so-called gestural theory of language evolution, whose proponents argue that language evolved initially as a gesture system before becoming vocal.

这个发现奠定了语言进化中所谓的手势理论。 这个理论的拥护者主张，语言在成为一种发声的表达方式之前是由手势表达系统演化而来的。

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The methods of risk management in the field of economy have been well developed, and the theory of risk management is also becoming complete and perfect.

风险管理的方法在经济管理领域已日趋成熟，风险管理的理论在融合了其它各个学科的科学方法后也在逐步完善。

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Once we formulate theory along the lines of the repression paradigm, we cannot then blithely turn around and "explain" personality change as a "becoming aware" of the previously repressed.

一旦我们制定与压抑范例大致相同的理论，我们就不能那么轻率地转身，“解释”人格改变为“意识到了”以前被压抑的。

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Now I think that one thing Ricoeur leaves out, and something that we can anticipate as becoming more and more important for literary theory and other kinds of theory in the twenty-first century, is Darwin.

我想利科所遗漏的，也是我们预期对于,二十一世纪的文学理论和其他理论越来越重要的，是达尔文的理论。

耶鲁公开课 - 文学理论导论课程节选

This, says the theory, stopped unwanted babies in the 1970s and 80s from becoming adolescent criminals in the decades that followed.

BBC: US crime figures: Why the drop?

One theory is that as some children's immune systems mature, becoming more adult, the allergic response goes away.

CNN: 'Exciting' advance reported in peanut allergy therapy

One theory is that the body responds to relatively long gaps between meals by becoming highly efficient at storing up energy whereas a routine of regular meals encourages a more steady metabolism.

BBC: 'Little and often' cuts cholesterol