You know from experience if you've ever mixed them to make salad dressing, they don't mix too well. And you may know that if you heat them up, they mix much better.

经验告诉我们,你无法把它们混合做成色拉酱调料，他们不会很好的混合，但是你也知道,如果我们把他们加热，就能够混合的更好。

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I mean a lot of you, I imagine, make yourself kind of a salad at a salad bar.

我的意思是,假设,你去色拉吧要了一种色拉

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Well how in the world do you-- how many chick peas you put in and how many-- how you remember later on how many tomatoes went into the salad?

那么究竟,放了多少鹰嘴豆,一段时间后你如何记得,色拉中有多少番茄

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And if they're a premade salad then it would be even more difficult because you're not constructing it yourself, so it's hard to uses based on these sort of things.

如果那是预制色拉,就更麻烦了,因为那不是你做的,就很难进行统计

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Aussie Cheese Fries with ranch dressing.

澳洲芝士薯条加色拉酱

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Three ounces of meat might have x calories or it might have y calories depending on what the meat is, how much salad dressing gets thrown on a salad, how much of this gets or that gets put in a food will vary its calorie content a lot.

三盎司的肉也许有x卡路里,也许有y卡路里,取决于肉的种类,色拉中放了多少色拉酱,在食物中有多少这个或那个,也会导致卡路里含量的差异

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选