形容词
中文翻译：有缺陷的
同义词：
['deficient', 'imperfect', 'faulty', 'flawed']
例句：
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1. The product was defective and had to be returned.
产品有缺陷，需要退回。
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2. The design is not perfect;there are some flaws in the construction.
设计并不完美，有些构造上的瑕疵。
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3.The car's brakes were defective, causing it to skid on the icy road.
汽车刹车有缺陷，导致在结冰的路上打滑。