哈尔滨市气象台今年首次发布暴雪红色预警信号。
Harbin Municipal Meteorological Observatory issued the first time this year, Blizzard red warning signal.
上海中心气象台发布了今年以来首次最高级别的暴雨红色预警信号。
Local weather forecasters issued the first red rainstorm alert of the year - the highest on the 3-level warning system.
预警系统分2个级别，红色信号属I级，表示细菌性食物中毒概率大于25%，黄色信号属II级，表示中毒概率为15% - 25%。
A red alert will mean a 25% or more risk of bacterial food poisoning, while a yellow alert will warn of a 15%-24% possibility.
预警系统分2个级别，红色信号属I级，表示细菌性食物中毒概率大于25%，黄色信号属II级，表示中毒概率为15% - 25%。
A red alert will mean a 25% or more risk of bacterial food poisoning, while a yellow alert will warn of a 15%-24% possibility.
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