求翻译：“一天一个苹果”是人们熟知的健康口号。确实，苹果含非常多的糖类、有机酸、纤维素、维生素、矿物质、多酚及黄酮类营养物质，被科学家称为“全方位的健康水果”。是什么意思？

"An apple a day" is a known health slogan. Indeed, Apple is including a lot of sugars, organic acids, cellulose, vitamins, minerals, polyphenols and flavonoids nutrients, the scientists called "a full range of healthy fruit.

"apple a day" is a well known health number. It is true that Apple included a very large number of sugars and organic acids, and fiber, vitamins, minerals, and many well-trained and flavonoid nutritional substances, and have been described by scientists as "full of healthy fruit.