... snail mail 蜗牛邮件(通过人工邮... snail fever 血吸虫病 pond snail 椎实螺 ...
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The disasters due to silt deposition took place in the lake area and mainly expressed in flooding, soil gleization and snail fever.
泥沙沉积灾害发生在湖区,突出表现为洪涝、土壤潜育化和血吸虫感染。
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