过度拥挤和恶劣的卫生状况导致难民营中出现疾病。
Overcrowding and poor sanitary conditions led to disease in the refugee camps.
恶劣的卫生状况导致每年有超过150万人患病死亡，其中大多数是儿童。
Poor sanitation leads to infectious diseases that kill more than one and a half million people a year, mostly young children.
研究人员表示，在那些卫生状况恶劣的国家，饮用水污染导致的疾病爆发往往是致命的。
More studies are needed to prove the adaptability of the technique, but its impact could be huge. In countries with poor sanitation, outbreaks caused by drinking contaminated water often prove fatal.
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