200 calories of fresh fruit and 200 calories of junk food, for example, cookies, have the same caloric value.

200 卡路里的新鲜水果和 200 卡路里的垃圾食品，例如饼干，具有相同的卡路里值。

Each possesses its own density of chemical potential energy, or caloric value, like for example, 1 gram of carbohydrate contains about 4 calories, while a gram of fat contains about 9 calories.

每一种都有自己的化学势能密度或卡路里值，例如，一克碳水化合物含有大约 4 卡路里，而一克脂肪含有大约 9 卡路里。