Second, he looked at these people and measured how fast they walk from where their experiment was to the elevator.

第二，他观察这些人,记录他们从实验地点,走到电梯的时间。

哈佛公开课 - 幸福课课程节选

When that was the case if you wanted fast food you had to at least spend the calories to get out of your car to walk into the place to buy the fast food.

那个时候,如果你想吃快餐,起码你得花力气打开车门,走进快餐店购买食物

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选