1. Fatigue impaired their judgment.
    疲劳削弱了他们的判断力。

2. impair

2. Poor food impaired her health.
    粗劣的食物损害了她的健康。

1. 损害,减少：immigrate 移居入境 | impair 损害,减少 | impale 以尖物刺住,围起

2. impair

2. 削弱：impact 碰撞、冲击、冲突;撞击、挤入、压紧 | impair 削弱 | impartial 公平的、不偏不倚的

3. 减损：impact load 冲击荷载 | impair 减损 | impedance 阻抗

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.

    e.g. Consumption of alcohol impairs your ability to drive a car or operate machinery...
           饮酒会削弱你驾驶汽车或操控机器的能力。
    e.g. His movements were painfully impaired by arthritis.
           他行动不便，深受关节炎之苦。

1. make worse or less effective

    e.g. His vision was impaired

2. make imperfect

    e.g. nothing marred her beauty

    Synonym: marspoildeflowervitiate