impair
verb [ T ] uk/ɪmˈpeər/ us/ɪmˈper/
损害，削弱
to spoil something or make it weaker so that it is less effective
A recurring knee injury may have impaired his chances of winning the tournament. 复发的膝伤可能降低了他在锦标赛中获胜的机会。
英汉双解词典收录81607条英汉双解翻译词条，基本涵盖了全部常用单词的读音、翻译及用法，是英语学习的有利工具。