名词
中文翻译：环境挑战
同义词：
['ecological challenge', 'environmental difficulty', 'environmental issue']
例句：
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1. The government is facing an environmental challenge as pollution levels continue to rise.
政府正面临环境挑战，因为污染水平持续上升。
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2. The company's decision to invest in renewable energy sources represents a significant environmental challenge.
公司决定投资可再生能源代表了一个重要的环境挑战。
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3. The scientist faced an environmental challenge when trying to develop a new drug for treating cancer.
科学家在尝试开发一种治疗癌症的新药物时面临了环境挑战。