1、diet v [I] (be allowed to) eat only some foods or a little food,esp to lose weight 只（準(zhǔn)）吃某類食物或少量食物; （尤指為減輕體重）節(jié)食:You ought to diet and take more exercise.你應(yīng)該節(jié)食并多做運(yùn)動(dòng).
2、[C] sort of food that is usually eaten (by a person,community,etc) （某人、 共同生活的人等）通常吃的食物; 日常食物:the Japanese diet of rice,vegetables and fish 米、 蔬菜、 魚等日本人常吃的食物 * Too rich a diet (ie Too much rich food) is not good for you.吃太多油膩的食物對你身體不好.* illnesses caused by poor diet 飲食欠佳導(dǎo)致的疾病.
[C] limited variety or amount of food that a person is allowed to eat,eg for medical reasons or in order to lose weight 限定的食物種類或數(shù)量,規(guī)定食譜（如為治療疾病或減輕體重的）:a salt-free diet 無鹽食譜 * [attrib 作定語] diet aids 食療.