Now, you can have a change of temperature without any heat being involved.
不进行热量传递也可以改变温度,想象有一个热绝缘的盒子。
Given these relationships between diet and health -you've got too few calories are bad, too many calories are bad, too much fat is bad, other things are good-- then, what should people eat?
考虑到饮食和健康的密切关系,比如热量摄入过低不健康,摄入过高也不健康,脂肪过多不健康,还有些东西是健康的,那么,人们到底应该吃什么呢
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