名词
中文翻译：智力低下
同义词：
['mental deficiency', 'mental retardation例句：1. The child was diagnosed with a mild form of mental retardation.（这个孩子被诊断出患有轻度的精神发育迟缓。）']
例句：
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1. The child was diagnosed with a mild form of mental retardation.
这个孩子被诊断出患有轻度的精神发育迟缓。
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2. She has been struggling with her mental health issues for years.
她多年来一直与她的心理健康问题作斗争。
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3.He is considered to have a mild case of mental retardation.
他被认为有轻微的精神发育迟缓。