规定饮食的英文：
diet

参考例句：

This diet allows you one glass of wine a day.
这种规定饮食可让你每天喝一杯酒。

The doctor told me that I would have to go on to a strict diet.
医生嘱咐我必须严格地按照规定饮食。

diet是什么意思：
n. 日常饮食，日常食物；规定饮食
v. 节食

The Diet is now sitting.
国会现在在会期中。

Sweet potato was the staple of their diet.
过去甘薯是他们的主食。

follow a strict diet
严格遵照饮食规定

The diet supplement is important for me.
饮食补给品对我很重要。

She is on a diet to lose a stone.
她在节食以减少一英石的体重。