形容词
中文翻译：不成功的搜索同义词
同义词：
['ineffective', 'unproductive', 'futile']
例句：
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1. The team's latest attempt at a successful search for the lost treasure was a complete failure.
团队最近一次寻找失落宝藏的尝试彻底失败了。
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2. Despite the unsuccessful search, we still have hope for finding the lost child.
尽管这次搜索没有成功，但我们仍然对找到失踪的孩子抱有希望。
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3. The scientist conducted an unsuccessful search for the missing data.
科学家进行了一次寻找丢失数据的不成功的搜索。