名词短语
中文翻译：修理和改善
同义词：
['repair', 'improvement', 'enhancement']
例句：
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1. The company has made significant repairsto its fleet of vehicles.
该公司对其车队进行了重大的修理。
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2. The government is committedto improving the quality of life for allcitizens.
政府致力于提高所有公民的生活质量。
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3.The project aims to enhance the efficiency ofthe production process.
该项目旨在提高生产过程的效率。