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单词 mental retardation
释义 Noun: mental retardation  'mentl `reetaa(r)'deyshun
  1. Lack of normal development of intellectual capacities
    - retardation, backwardness, slowness, subnormality

Derived forms: mental retardations

Type of: stupidity

Encyclopedia: Mental retardation Mental retardation, X-linked, with hypotonia

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