1 [C,U] the food that a person or animal usually eats 日常食物；日常饮食: They live on a diet of rice and vegetables. 他们的日常食物是大米和蔬菜。I always try to have a healthy, balanced diet (= including all the different types of food that our body needs). 我总是设法做到饮食均衡健康。Poor diet is a cause of ill health. 饮食营养不足是健康欠佳的原因之一。

2 [C] certain foods that a person who is ill, or who wants to lose weight is allowed to eat （因患病或为减肥而设的）规定饮食，特种食谱: a low-fat diet 低脂肪食谱a sugar-free diet 无糖食谱 ➔dietary /ˈdaɪətəri ||; ˈdaɪəˌtɛrɪ/ adj dietary habits/requirements 饮食习惯╱要求