1. experience an abnormal physiological or mental condition; all ill; be sick 2. illness; sickness; disease 3. fault; mistake
[动] 1、生理或心理上发生不正常状态 [名] 2、生理或心理上出现的不正常的状态 3、缺点，错误
You are seriously ill. Why don't you see a doctor?
It is pleasant that mother is recovering from her illness.
You must rewrite the script for there are too many mistakes in it.
病虫害【bìng chóng hài】
plant diseases and insect pests
Famine usually follows drought or serious outbreak of crops diseases and insect pests.