n.(身体或精神上的)疾病( illness的名词复数 );(某种)病;患病期;
例句:
illnesses requiring referral to hospitals
需要送到医院就诊的疾病
Many illnesses are the re-sult of inadequate sanita-tion.
许多疾病都来源于不健全的卫生设施.
High levels of stress may lower your immunity to common illnesses.
压力过大可能会使你对常见疾病的免疫力下降.