illness

illness, sickness, disease, complaint

这些名词均有“疾病”之意。
illness: 不具体指，而是泛指一切疾病，强调生病的时间或状态，语体较sickness正式一些。
sickness: 较口语化，可与illness换用，但还可表示“恶心”。
disease: 指具体的疾病，且通常较严重，发病时间也较长。
complaint: 现代英语中，既可指症状，也可指疾病。

名词 illness:

1. impairment of normal physiological function affecting part or all of an organism
   同义词：unwellness, malady, sickness

1. He will pull through his illness soon.
   他很快就会恢复健康的。
2. Worry and illness had made him prematurely old.
   他心事重重、 疾病缠身，落得个未老先衰。
3. He came to the meeting despite his illness.
   尽管生病，他还是来参加会议。
4. Too much work and too little rest often lead to illness.
   过量的工作和过少的休息会引起疾病。
5. Her long illness gradually sapped her strength.
   长期的患病使她的体力渐渐衰竭。
6. His illness diminished his health.
   疾病侵蚀了他的健康。
7. There was no illness in the village this winter.
   今年冬天这村里没什么疾病。