来自《耶鲁大学开放课程：有关食物的心理学、生物学和政治学 第2集 第2集》
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If you go back to this particular graphic,如果你回过头来看这张图 -
the interesting thing is how have humans changed思考人类是如何演化的 -
and what are they like now.现在又成为什么样 -
Well now the food environment is things like this.当前的食品环境是这样的 -
Instead of hard labor to go get food和先前辛苦劳作以获取食物不一样 -
all it requiresis a little drive-in to the window.取而代之的是 免下车餐厅 -
It used to be the case--曾经是这样的情况 -
I forget how long drive-in windows have been around,我忘了免下车餐厅已经出现多久了 -
certainly as long as you guys can remember--当然可能自打你们记事时就出现了 -
but there was a time when drive-in windows didn't exist.但是在免下车餐厅尚未出现的时候 -
When that was the case if you wanted fast food那个时候 如果你想吃快餐 -
you had to at least spend the calories起码你得花力气打开车门