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| 全球增温; 全球变暖 (由于人类活动向大气圈排放大量废气，二氧化碳不断增加，"温室效应"日趋强化，导致全球近地面气温升高。1990年49位诺贝尔奖金获得者致函美国总统，指出全球变暖是21世纪最严重的生态灾难) | |||
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global wanning : 1 phrase in 1 subject |
| Explosives and Explosive Ordnance Disposal | 1 |
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