meal与diet的区别
meal:n. 一餐，一顿饭；膳食
vi. 进餐
After I finished my meal, I went to wash the dishes.
用完餐后，我就去洗碗了。
diet:n. 饮食；食物；规定饮食
vi. 节食
vt. [医] 照规定饮食
He suddenly started dieting for some reason.
由于某种原因，他突然开始节食。I have special diet requests.
我有特殊的健康要求。
She is on a diet.
她正节食减肥。