illness

/ˈɪlnəs/

impairment of normal physiological function affecting part or all of an organism

中文释义：疾病；生病

Regular exercise can reduce the risk of developing chronic illnesses like heart disease.

定期锻炼可以降低患心脏病等慢性疾病的风险。

She took a leave of absence from work due to a serious illness.

她因重病请了假。