normal distributionBrE/ˌnɔːml dɪstrɪˈbjuːʃn/NAmE/ˌnɔːrml dɪstrɪˈbjuːʃn/noun (statistics统计) theusualwayinwhichaparticularfeaturevariesamongalargenumberofthingsorpeople, representedonagraph by a line that rises to a high symmetricalcurveinthemiddle正态分布➡ comparebell curve