形容词
中文翻译：Unknown
同义词：
['deficient', 'faulty', 'imperfect', 'faulty', 'defective']
例句：
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1. The car has a defective brake system.
这辆车有一个有缺陷的刹车系统。
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2. The software is defective and needs to be fixed.
软件有缺陷，需要修复。
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3. The product is defective and cannot be used as intended.
产品有缺陷，不能按预期使用。