唐氏综合症是最常见的引发智力缺陷的遗传因素。
Down syndrome is the most common genetic cause of mental retardation.
从医生的观点看来约翰患有智力缺陷。
John suffered from mental deficiency from the point of view of a doctor.
良好的非智力因素能够弥补智力与能力的某些缺陷与不足。
The good non-intelligence factors can make up for some defects of the intelligence and ability.
良好的非智力因素能够弥补智力与能力的某些缺陷与不足。
The good non-intelligence factors can make up for some defects of the intelligence and ability.
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