impair
/ɪmˈpeə(r); ɪm`pɛr/ v[Tn]
weaken or damage (sth) 削弱或损害（某事物）
Loud noise can impair your hearing. 巨大的噪音有损听觉.
Today's attack has seriously impaired attempts to achieve peace in the area. 今日发动的攻击严重损害了在该地区谋求和平的努力.
impaired vision 受损的视力.