The environmental problems of our earth are so severe, such as global warming, the damaged ozone, and all the different kinds of pollution.
现在地球环境问题可真是严重，什么全球气候变暖啊，臭氧层耗损啊，还有各种污染。
It's easy to feel vulnerable and frustrated when one hears news stories and articles highlighting the hazards of global warming, environmental pollution and other ill-effects of environment abuse.
当一个人听到强调全球变暖，环境污染和其他环境破坏的不良影响的新闻报道和文章时，很容易变得脆弱和失望。
Human beings face challenges from nature: global warming, ozone holes, and environmental pollution.
人类面临自然的挑战：全球变暖，臭氧洞和环境污染。
As we know, the global water shortage in becoming increasingly severe mainly due to global warming, environmental pollution and the ever-increasing population.
众所周知，全球水资源短缺的问题越来越严重，主要是因为全球变暖，环境污染等因素所致。
Species extinction: Environmental pollution, global warming and extinction of bacterial infections it.
灭绝原因：环境污染、全球变暖以及细菌感染。
Species extinction: Environmental pollution, global warming and extinction of bacterial infections it.
灭绝原因：环境污染、全球变暖以及细菌感染。
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