1·Poor blood oxygen levels and blood vessel blockages in people with sickle-cell disease can lead to chronic acute pain syndromes, severe bacterial infections, and necrosis (tissue death).
镰状细胞病患者血液含氧量低并且发生血管堵塞，可导致出现慢性和急性疼痛综合症、重度细菌感染和坏疽(组织坏死)。
2·The reigning theory is the same as it is for so many syndromes with no known cause: some people are born with genes that make them highly vulnerable to environmental stimuli.
主流理论的解释跟所有不明原因的综合症一样：“有些人天生的基因使他们难以抵御环境刺激。”
3·Certain groups, including children with ADHD, cerebral palsy, autism and developmental syndromes have higher rates of sleep disorders.
那些患多动症，脑瘫，自闭症与发育综合症的孩子有睡眠障碍的几率更高。
4·Other agents can cause similar syndromes .
其它病原也可引起相似的综合症。
5·Just to be clear, she does have a sister with Down Syndromes.
澄清一下，她有一个患有唐氏综合症的姐妹。