自然灾害 Natural Disaster :地震 earthquake雪崩 avalanche火山泥流 lahar泥石流 mudflow/landslide超级火山爆发 supervolcano洪水 flood大(或急剧的)漩涡 maelstrom海啸 Tsunami 暴风雪 blizzard (呵呵)干旱 Drought 雹暴 Hailstorm热浪 heat wave飓风(台风)Hurricanes, Tropical cyclones, and Typhoons 冰雹 ice storm龙卷风 tornado冰河时代 ice age森林大火 wildfire流行病 Epidemic 饥荒 Famine 太阳耀斑 Solar flare