mid-14c., from Middle French défectif (14c.) and directly from Late Latin defectivus, from defect-, past participle stem of deficere (see deficient). A euphemism for "mentally ill" from 1898 to c. 1935. Related: Defectively; defectiveness.
实用例句
1. A manufacturer negligently made and marketed a car with defective brakes.
某厂家由于疏忽，制造并销售了一款刹车系统存在缺陷的汽车。
来自柯林斯例句
2. Retailers can return defective merchandise.
零售商可以退回有缺陷的商品。
来自柯林斯例句
3. Her sight was becoming defective.
她的视力开始出现问题。
来自柯林斯例句
4. Her hearing was found to be slightly defective.
经检查，她的听力有点缺陷。
来自《权威词典》
5. The building was destroyed when the defective boiler exploded.
