1. He trains on a special diet.
   他经常吃特定的食物以保持健康。
2. She is on a strict diet.
   她正在节食。
3. I'm supposed to go on a diet.
   我应该节食
4. Fish protein features prominently in the Japanese diet.
   鱼的蛋白质在日本人的饮食中占重要地位。
5. It is inadvisable to have too much sugar in your diet.
   饮食中糖分太多是不可取的.

　1个名词解释