求翻译：莱特曼博士是世界最顶尖的测谎专家。从学生时期起，他就开始研究肢体语言，细微表情以及文化背景等与言语真实性之间的联系。在和国防部开展一个项目之后，莱特曼开设了一家私人测谎公司，为各个政府部门和个人提供咨询。由于能看破别人的秘密，莱特曼往往显得有些自负而不知进退，是什么意思？

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Dr. lightman is the world's top polygraph expert. As a student, he began to research with body language and subtle facial expressions and the language barrier and cultural background, such as the link between authenticity. In a project and the Ministry of Defense, after Letterman set up a private co

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Dr Alex Lightman was lie to the world's top experts. From a student, he began to study body language, subtle expressions and cultural background, and links between authenticity and speech. And the Department of Defense initiated a project, Alex Lightman opened a private lie detection firm, provision

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