Then there are other people who are pretty careful about what they eat and they're still prone to gaining weight.

还有一类人非常注意控制饮食,但是仍然容易发胖

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

You're already kind of fat. I'm worried about your health.

你已经有点发胖了，我真担心你的健康。

That's all实战 - SpeakingMax英语口语达人

Each of you probably know, some of you may be in this category yourself, people who can eat like crazy and still not gain weight.

你们每个人可能都知道,你们中有些人是那种,怎么吃都不会发胖的人

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

You eat, and eat, and eat and those people don't gain weight.

那些人大吃特吃 却不发胖

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

In that process there is a metabolic engine at work, and some people have an efficient engine so that the calories in get banked in the fat, other people have an inefficient engine, that is the calories get wasted as body heat and things like that, and they tend not to gain weight.

这过程中人体内有个工作着的代谢引擎,有些人的代谢引擎效率很高,热量便转化为脂肪储存起来,另一些人的效率低下,能量就以体温等形式被浪费了,因此他们就不容易发胖

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

If you change the animal's environment and you give it access to these sort of foods, and these are the pictures that I showed in the first class, and you remember I asked you what constituents of this diet promoted obesity and you said it was fat, sugar, and variety that was correct.

如果你改变动物所在环境,再给它们这些食物,这些图片我们在第一课见到过,我问过这些食物中哪些成分使人发胖,你们说脂肪,糖和其他成分,没错

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选