faulty

adj.有缺陷的；不合格的；有错误的；有缺点的

This store warrants the return of any faulty goods. 这家店包退所有有缺陷的货物。

I got an electric shock from that faulty light switch. 那个有毛病的电灯开关把我电了一下。

Consumers are encouraged to complain about faulty goods. 要鼓励消费者对劣质商品投诉。

My judgement was frequently faulty, but my loyalty to the nation could not be questioned. 我的判断经常出错，但是我对祖国的忠诚是无可置疑的。

The new TV is faulty in design. 新电视在设计上是有缺点的。