然而，人们越来越关注捕鱼和其他人类活动对海洋生态系统的影响，因为现在海洋生态系统远非原始状态。
There is, however, increasing concern about the impact of fishing and other human activities on marine ecosystems, which are now far from pristine.
由于人类生产和消费活动的急剧增加，生态系统正在加速恶化。
The deterioration of the ecological system is accelerating because of the dramatic increase of human production and consumption.
麻省理工的综合全球系统模型不同于其它模型，它不仅能详细评估气候科学，而且还能详细评估人类活动可能带来的影响。
Unlike other models, MIT's Integrated Global Systems model makes detailed assessments not just of climate science but also of the likely changes in human activity.
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