At the same time, along with the benefits of such machines, employees must study knowledge involved in such machines so that they are able to control them.
同时，随着这些机器带给我们的好处，员工们也必须要学习与之相关的知识以便使用它们。
The main work of this paper is to study knowledge-based method and statistics-based method on face detection.
本文的主要工作是对人脸检测的两大类方法进行了研究和分析，即基于知识的方法和基于统计的方法。
Theory means to abstract and summarize objective realities or phenomena, whose basic aspect is concept, through it to arrange and study knowledge properly.
理论是对客观现实（现象）的抽象和概括，理论最基本的方面是概念，通过它对知识进行有条理的编排和研究。
Theory means to abstract and summarize objective realities or phenomena, whose basic aspect is concept, through it to arrange and study knowledge properly.
理论是对客观现实（现象）的抽象和概括，理论最基本的方面是概念，通过它对知识进行有条理的编排和研究。
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