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美式拼写

The human body is a remarkable food processor. As an adult, you may consume over a ton of food per year and still not gain or lose a pound of body weight. You are constantly harnessing, and consuming energy through the intricate mechanism of your body in order to remain in energy balance. To maintain a given body weight, your energy input must balance your energy output. However, sometimes the overall energy balance is upset, and your normal body weight will either fall or increase. The term body image refers to the mental image we have of our own physical appearance, and it can be influenced by a variety of factors, including how much you weigh or how that weight is distributed.
人体是个了不起的食物处理器。成年人每年可以消耗一顿的食物却完全不会有任何体重变化。你总在通过复杂的身体机制利用和消耗着能量，以保持能量平衡。为了保持某个固定的体重，你需要摄入和消耗的能量相平衡。然而，有时候整体的能量平衡被打乱了，你的正常体重就会或增或减。“身体意象”这个短语指我们脑中对自己身体形象的概念，能被很多因素影响，比如你有多重，或者你的体重分布情况。