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
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