点击下方单词,选择对的这个单词
及物动词
1. 损害;妨碍;削弱If something impairs something such as an ability or the way something works, it damages it or makes it worse.
1. make worse or less effective
e.g. His vision was impaired
2. make imperfect
e.g. nothing marred her beauty
Synonym: marspoildeflowervitiate
多通过句子记忆单词，而不是单独死记硬背。
