一个伏案工作的人所需要的能量要比基础代谢多30 - 40%。

For one engaged in a sedentary occupation, the extra energy requirement rises to from 30 to 40 percent above basal.

食物热效应的定义是：机体摄入食物过程中，机体能量代谢比基础代谢增高的部分。

The Thermic Effect of food is defined as: the increment in energy expenditure above resting metabolic rate due to the cost of processing food for storage and use.