(There is a saying in the workplace that is right: "It is better to speak PPT than to do PPT, and it is better to listen to PPT than to speak PPT". The purpose of making PPT is to help others sort out the complex knowledge structure; when it comes to PPT, it is to explain the content more concisely to the fathers of Party A in the audience. Therefore, PPT does not exist for expression, but for listening; it serves not the people who use PPT, but the people who watch PPT.)
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