名词
中文翻译：家族性唐氏综合征
同义词：
["Down's syndrome", 'trisomy 21']
例句：
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1.The child was diagnosed with familial Down syndrome, which means he has a genetic disorder.
这个孩子被诊断出患有家族性唐氏综合征，这意味着他患有一种遗传疾病。
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2. The parents of the child were worried about the potential risks associated with familial Down syndrome.
这个孩子的父母担心与家族性唐氏综合征相关的潜在风险。
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3. In some cases, familial Down syndrome can be passed down through multiple generations.
在某些情况下，家族性唐氏综合征可以通过多代人传递。