there are no healthy or unhealthy food , only healthy or unhealthy diets.

说说对这句话的理解 用英文

没有健康或不健康的食物之分,只有健康或不健康的饮食

food是广泛的统称,这里指牛肉,鸡蛋,一类的原料,以及炸鸡,薯条一类的单一食物.
diet是我们吃的食物成品,也就是饭.而且多指成系列的,例如早饭(100ML牛奶加1个鸡蛋在吃一片牛肉)这叫diet,这里的意思近似于饮食习惯

这句话的意思是食物本身都是好的,关键是我们怎么吃他们,什么时候吃他们,吃多少.也就是健康或不健康的饮食习惯.

当然在有些特殊时候这里也可以如 ‘有来无回’ 翻译的那样成:
不分健康不健康食物，只有健康不健康节食计划.
因为一般有些人会提供一些节食食谱那也是diet的一种
所以关键这里是diet和food的区别 diet是餐,早餐,晚餐,或者早茶一类有计划有系列的食物.food是单一的或笼统的食物. 搞清这个就好办了
i just noticed this few minutes ago that you want me to explain in english.
well,i will just make the definition first.
food: a general call of the things we eat(not from dictionary)
diet: a meal or a meal seriesc we have by times.(made by myself)
for examlpe: i have a cup of milk for lunch or i have a cup of milk for lunch everyday. that's a kind of diet.
but food, which is a very general or very specific call of things we eat, can be very wide or very narrow in different times. but here in this setence, it means the source we used in a meal or a single food in part of the diet.