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Calorie
卡路里
On TV commercials, you sometimes see low calorie food.
在電視廣告上，你有時能看到低熱量食品。
What is a calorie?
什么是卡路里？
A calorie is the unit of energy in food.
卡路里是食物中的熱量單位。
Most food produces energy in your body, but high calorie food is not always good for your health.
大部分食物在你體內(nèi)產(chǎn)生熱量，但高熱量食物并不總是對你的健康有益。
You don't need a lot of calories a day.
你一天不需要太多的熱量。
So when you eat more food than you need to, the unused calories are saved in your body.
所以當(dāng)你吃的食物多于你的所需時，多余的熱量就會儲存在你的體里。
Fast food like pizzas, hamburgers or French fries usually has a lot of calories.
披薩、漢堡或炸薯條之類的快餐有很多卡路里。
So you get fat if you always eat fast food.
所以你總吃快餐的話容易變胖。
