形容词
中文翻译：无生产力的
同义词：
['unproductive', 'ineffective', "unfruitful例句：1. The company's decision to invest in new technology was nonproductive.（公司决定投资新技术是无效的。）"]
例句：
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1. The company's decision to invest in new technology was nonproductive.
公司决定投资新技术是无效的。
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2.The research project was nonproductive because it produced no results.
这个研究项目是无效的，因为没有产生任何结果。
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3.The farmer's efforts were nonproductive as the weather conditions were not favorable.
农民的努力是无效的，因为天气条件并不理想。