the food and drink usually eaten or drunk by a person or group

Diet varies between different countries in the world. 世界各国的饮食各不相同。

a healthy/balanced/varied diet 健康／均衡／多样化的饮食

Rice is the staple diet (= most important food) of many people in China. 在中国大米是很多人的主食。

The children seem to exist on a diet of fried food. 孩子们好像离不开油炸食品。

an eating plan in which someone eats less food, or only particular types of food, because they want to become thinner or for medical reasons

I'm going on a diet next week and hope to lose ten pounds before Christmas. 下周我要节食，希望在圣诞节之前能减掉十磅。

a crash/strict/calorie-controlled diet 突击／严格／控制热量的节食

The doctor put me on a low-salt diet to reduce my blood pressure. 为了降低血压，医生规定我要低盐饮食。

a particular type of thing that you experience or do regularly, or a limited range of activities

He was brought up on a diet of political propaganda from birth. 他一出生就开始接受老一套的政治宣传。

Network TV only offers a diet of bad reality shows every night. 每天晚上电视播放的都是几部劣质的真人秀。

Diet food or drink contains less sugar or fat than the usual type, and often contains an artificial sweetener.

diet cola 健怡可乐

to limit the food and/or drink that you have, especially in order to lose weight

You should be able to reduce your weight by careful dieting. 通过小心控制饮食你应该可以减轻体重。