"We found that physical activity was effective in controlling weight only among women who started off with a normal BMI."

VOA: standard.2010.03.30

This normal weight animal like this has its whole equilibrium thrown off, its homeostasis thrown off when its dietary conditions change.

在饮食条件发生变化时,这些正常体重动物的生理平衡被打破,于是摈弃了原来的平衡饮食

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

This is a normal weight laboratory rat given much more than it would-- could necessarily eat of standard laboratory food.

这是一只体重正常的实验鼠,如果我们给它标准的实验室饲料,即使食物分量超出了它的食量

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

While there is advice aplenty on how to lose pounds or kilograms, a new study focuses on middle aged and older women who maintain normal body weight, or BMI (Body Mass Index) and do not diet.

VOA: standard.2010.03.30

So the average person, average normal weight of a typical person might consume 2000 calories a day.

普通人,拥有平均体重的普通人,一天大概消耗二千卡

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Now in this particular case, these animals will not overeat on the healthy balanced food and won't gain excess weight, they'll maintain a normal weight.

在这种情况下,它们并不会吃过量的健康食品,因此不会变胖,所以一直保持着标准的体重

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Some people can fight the brain off in this case, and control their food intake, maintain a healthy diet, and maintain a normal weight, but the number of such people in the population is shrinking by the day.

有些人可以抵制大脑的控制,控制食物的摄入量,维持健康饮食 保持正常体重,而今,这类人的数量日益减少

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选