名词
中文翻译：负的保证
同义词：
['negative promise', 'negative commitment']
例句：
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1.The company made a negative pledge to improve its environmental performance.
该公司做出了一个否定承诺，即改善其环境表现。
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2. The agreement was based on a negative pledge that both parties would not sue each other.
该协议基于双方不起诉对方的否定承诺。
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3.The new policy is a negative pledge to reduce carbon emissions.
新政策是减少碳排放的否定承诺。