这些结果说明卫生条件差是疾病流行的一个原因。
The results implicate poor hygiene as one cause of the outbreak.
疾病流行国家中当前的形势。
我们仍然滞后于这场毁灭性的疾病流行。
Schistomiosis, which is a worm that lives in river waters, causes terrible diseases that are still prevalent in many parts of the world.
血吸虫,是一种生存在河水中的蠕虫,可以引起严重疾病,并仍在世界上众多地区广泛流行
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