MENTAL DEFECTIVENESS
\mˈɛntə͡l dɪfˈɛktɪvnəs], \mˈɛntəl dɪfˈɛktɪvnəs], \m_ˈɛ_n_t_əl d_ɪ_f_ˈɛ_k_t_ɪ_v_n_ə_s]\
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By Princeton University
By DataStellar Co., Ltd