地震、火山爆发、
泥石流、海啸、台风、洪水
earthquake,volcanic eruption,debris flow,tsunami,typhoon,flood
地面沉降、土地沙漠化、干旱、海岸线变化
land subsidence,land desertification,drought,shoreline change
臭氧层变化、水体污染、水土流失、
酸雨ozone depletion,water pollution,water loss and soil erosion,acid rain
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