unimpaired
adj. 未受损伤的；没有削弱的，未减少的
例句
His health and vigour were unimpaired by a stroke.
中风并未损害他的健康和活力。
《柯林斯英汉双解大词典》
Although he's ninety, his mental faculties remain unimpaired.
他虽年届九旬，但头脑仍然清晰。
《牛津词典》
He miraculously survived and was mentally unimpaired, with one exception: his personality.
但他奇迹般的幸存下来，且智力没有遭到损害，但有一个例外：他的个性。
