名词短语
中文翻译：不成功的电话
同义词：
['unsuccessful attempt', 'unsuccessful attempt to', 'unsuccessful attempt on']
例句：
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1. The company's latest marketing campaign was an unsuccessful attempt at rebranding.
该公司最新的营销活动是一次试图重新定位的失败尝试。
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2. The scientist made an unsuccessful attempt to solve the problem.
科学家试图解决这个问题，但失败了。
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3. The project was an unsuccessful attempt to save the environment.
这个项目试图拯救环境，但失败了。