1. 疾病;患病(期)
Illness is the fact or experience of being ill.
e.g. If your child shows any signs of illness, take her to the doctor...
如果您的孩子出现任何患病症状,带她去看医生。
e.g. Mental illness is still a taboo subject.
精神疾病仍然是禁忌话题。
2. (特指某种)疾病
An illness is a particular disease such as measles or pneumonia.
e.g. She returned to her family home to recover from an illness.
她回家养病来了。