名词
中文翻译：过期的效用
同义词：
['obsolete utility', 'obsolete utility', 'obsolete utility']
例句：
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1. The company's outdated technology is no longer practical for modern production needs.
公司的过时技术对于现代生产需求已经不再实用。
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2. The old model has become obsolete due to technological advancements.
由于技术进步，旧模型已经变得过时。
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3.The expired utility of the old system was quickly replaced by a more efficient one.
旧系统的失效效用很快被更高效的系统所取代。