To make the work easier, workers may have lubricated the paths either with wet clay or with the fat from cattle.

为了减轻施工难度，工人们可以用湿粘土或牛的脂肪来润滑道路。

youdao

Fat, greying and struggling for work - would you be Friends with them now?

身材发福、头发灰白、为工作打拼——你现在也和“老友”们一样麽？

youdao

So, the diet should be getting the fat out of the cells so insulincan work again.

所以，应该用饮食把脂肪从细胞里排出来，使胰岛素可以再次起作用。

youdao

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

Being too fat to work.

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