“早餐要吃好,中餐要吃饱,晚餐要吃少”用英语怎么说？

The English translation for 'Eat a good breakfast, a full lunch and a small dinner' is 'Eat a good breakfast, a full lunch and a small dinner'.

If you want to express the idea of 'Breakfast is important, lunch is substantial, and dinner is light' in English, the phrase is 'Eat a good breakfast, a full lunch and a small dinner'.

To say 'Breakfast should be eaten well, lunch should be eaten full, and dinner should be eaten little' in English, you can use 'Eat a good breakfast, a full lunch and a small dinner'.