Especially when keywords and key data cannot be modified or moved. Articles in liberal arts can be replaced, explained and relayed to avoid repetition, while those in science are more difficult. Because the data of science and engineering are all completed by experiments, the parameters, variables and experimental methods are fixed, so it is difficult to move and modify them. For liberal arts, you can improve and add your own opinions and ideas on the basis of the theme, but the overall structure cannot be changed, so it will still be checked. Translated into English, the key words are still those, just in a different language, and will still be checked again. In addition, the English level of China people is very high now. In the era of cloud computing and big data, only originality is the safest.