在2011年考研英语二的翻译部分，考生将面对一段关于环境保护的英文段落。这段文字强调了气候变化对生态系统的影响，以及全球合作在应对这一挑战中的重要性。以下是可能的段落：
"Global warming is a significant threat to the Earth's ecosystems. The rise in average temperatures is causing polar ice caps to melt, sea levels to rise, and weather patterns to become more extreme. These changes are disrupting the delicate balance of nature, leading to the extinction of species and the destruction of habitats. To combat this crisis, it is crucial for nations to collaborate and implement policies that reduce greenhouse gas emissions. Renewable energy sources and sustainable practices must be encouraged to mitigate the effects of climate change. Only through united efforts can we protect our planet for future generations."
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