求翻译：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是什么意思？

Period from the student, he began to study body language, subtle facial expressions, and cultural background and language ties between authenticity. And Department of Defense in carrying out a project, Letterman opened a private polygraph company, for the various government departments and individua

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 company, lie detector for various government departm

From the student time, he starts to study the body language, slight expression as well as cultural context and so on and between spoken language authenticity relation.In develops a project after Department of Defense, Lai Turman opens one personally to measure lies the company, and provides the cons

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 of advice to various government departments and indi

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