impair

/ˌɪmˈpɛr/

make worse or less effective

Chinese meaning: 损害；削弱；损伤

Lack of sleep can impair your ability to concentrate during exams.

睡眠不足会损害你在考试期间的注意力。

The accident impaired his vision, but he still managed to drive safely.

事故损害了他的视力，但他仍然设法安全驾驶。