形容詞 defective:

1. having a defect
   同義詞：faulty
2. markedly subnormal in structure or function or intelligence or behavior
3. not working properly
   同義詞：bad

1. She has a defective utterance.
   她發(fā)音有缺陷。
2. A damaged or defective object or device.
   損壞物，缺陷物損壞的或有缺陷的物體或設(shè)備
3. He is defective in moral sense.
   他不能分辨善惡。
4. He is mentally defective.
   他智力不健全。

de.fec.tive

adj.Abbr. def.（形容詞）縮寫 def.

Having a defect; faulty:
有缺點(diǎn)的：有毛病的；不完善的：
例句：
a defective appliance.
有毛病的器具

Marked by subnormal structure, function, intelligence, or behavior:
有缺陷的：具有結(jié)構(gòu)、功能、智力或舉止行為不正常的特點(diǎn)的：
例句：
defective speech.
有缺陷的演講

Grammar Lacking one or more of the inflected forms normal for a particular category of word, as the verbmay in English.
【語(yǔ)法】 不完全變化的，變形不全的：一特定詞類缺乏一種或多種正常的詞形變化形式的，如英語(yǔ)中的動(dòng)詞may
n.Offensive （名詞）【無(wú)禮用語(yǔ)】
One that is physically or mentally deficient.
有缺陷的人：身心不健全的人

【引伸】
defec.tively
adv.（副詞）
defec.tiveness
n.（名詞）