玉米灰斑病是凤庆县近年突然暴发流行的一种玉米叶部病害。
Gray leaf spot of maize occurred suddenly in Fengqing County, Yunnan Province in the recent years.
环境恶化和气候模式变化导致一些已知疾病在人们意想不到的地点和时间突然暴发，引发前所未有的大量病例。
Environmental degradation and changing weather patterns allow known diseases to flare up in unexpected places, at unexpected times, and with unprecedented Numbers of cases.
在人们对疟疾没有多少免疫力或毫无免疫力的地区，如果气候以及其它环境突然变得利于传播，可能会暴发疟疾流行疫情。
Malaria epidemics can occur when climate and other conditions suddenly favour transmission in areas where people have little or no immunity to malaria.
急性的，暴发的：突然且很严重的发生。用于疾病。
Medicine Occurring suddenly and severely. Used of a disease.
急性的，暴发的突然且很严重的发生。用于疾病。
急性的，暴发的突然且很严重的发生。用于疾病。
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