名词
中文翻译：无价值的
同义词：
['useless', 'worthless', 'trivial']
例句：
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1. He bought a useless old car for the sake of sentimental value.
他为了情感价值买了一辆没用的老车。
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2. The useless ideas in her head were just noise to him.
她脑子里那些没用的想法对他来说只是噪音。
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3. She was too busy with work to notice the useless advertisements on TV.
她太忙了，没注意到电视上的那些没用的广告。