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extreme weather 极端天气 adverse weather condition 恶劣的天气状况 desertification 沙漠化 sandstorm 沙尘暴 air quality rating 空气质量评级 visibility 能见度 sand and dust weather 沙尘天气 forestation 植树造林 Three-North Shelter Forestation Project 三北防护林工程 arid and semi-arid areas 干旱和半干旱地区 topsoil 表土层 high temperature 高温 less rainfall 少雨 cold snap 寒潮 stormy wind 暴风 blizzard 大风雪 snowstorm 暴风雪 ice rain 冻雨 thunderstorm 雷暴 hail/hailstone 冰雹 frosty 霜冻 cold spell 春寒期 dry spell 干旱期 drought-relief efforts 抗旱 drinking water shortage 饮用水缺乏 drought region 干旱地区 rain spell 雨季 precipitation 降雨或降雪量 fog 浓雾 sleet 雨夹雪;雹;冻雨 hurricane 飓风 cyclone 旋风 | 
