名词
中文翻译：不合格产品
同义词：
['defective', 'substandard', 'defective']
例句：
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1. The company rejected the product as being unqualified for sale.
公司拒绝销售这个产品，因为它不达标。
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2. The engineer found several defects in the machine's design.
工程师在机器的设计中发现了几个缺陷。
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3. The manufacturer had to recall all the defective products due to safety concerns.
由于安全担忧，制造商不得不召回所有次品。