/ ˈkiː.t̬oʊ ˌdaɪ.ət / noun informal
a type of eating plan in which someone aims to lose body weight by eating a lot of foods that are high in fat, but few carbohydrates , with the result that the body is forced to burn fats rather than carbohydrates:
The keto diet is a very low-carb and high-fat diet. 生酮饮食是一种碳水极低脂肪很高的饮食。
ketogenic diet

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/ ˌkiː.t̬oʊˌdʒen.ɪk ˈdaɪ.ət / noun
a type of eating plan in which someone aims to lose body weight by eating a lot of foods that are high in fat, but few carbohydrates , with the result that the body is forced to burn fats rather than carbohydrates:
He is on the classic ketogenic diet, which uses a ratio of four fats to one carbohydrate and one protein. 他采用的是典型的生酮饮食,即四份脂肪与一份碳水化合物和一份蛋白质的比例的饮食。

(Translation of 生酮饮食 from the Cambridge Chinese (Simplified)-English Dictionary © Cambridge University Press)