关于恶劣天气的英文词汇 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typhoon 台风whirlwind 龙卷风waterspout 海上龙卷风Indian summer 秋老虎weather modification 人工影响天气artificial precipitation/rainfall enhancement 人工增雨artificial rainfall infiltration 人工降雨El Nino phenomenon 厄尔尼诺现象La Nina phenomenon 拉尼娜现象forestation 植树造林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