冬半年经常发生连阴天气和寒潮天气，严重影响了蔬菜的质量和产量。
Serial cloudy sky and cold wave in cold half year brings about a greater impact on the quality and yield of vegetable.
冬半年经常发生连阴天气和寒潮天气，严重影响了蔬菜的质量和产量。
Serial cloudy sky and cold wave in cold half year brings about a greater impact on the quality and yield of vegetable.
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