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① Old websites, channels around 8-10 years, continue steadily to run, with no Search Engine Optimization cheating, ranking can fall. ① so how key words that can be many displayed, and exactly how many effective pages take. But through the perspective that is present the fundamental difference between this data in the last paragraph is still obvious. For example, you search for "Shanghai web site Design" in Shanghai and search for "Shanghai site Design" in Dalian. of.doi:10.5281/zenodo.6579291 fatcat:cbihx2nkezfapjoqxaz53w6zfy