名词短语
中文翻译：有用的效率同义词
同义词：
['utility', 'effectiveness']
例句：
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1. The new design of the car has greatly improved its useful efficiency.
这款新车的设计大大提高了其实用性。
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2. The manager's decision to increase staff will undoubtedly improve the company's useful efficiency.
经理决定增加员工将无疑提高公司的工作效率。
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3. To achieve maximum useful efficiency, it is essential to optimize resource allocation.
为了实现最大的工作效率，优化资源配置是必要的。