你如何解释在科罗拉多州博尔德市，医疗保险的平均费用是9103美元，而在一小时车程远的科罗拉多州柯林斯堡，费用却是6448美元？
How do you explain that in Boulder, Colo., the average cost of medicare treatment is $9,103, whereas an hour away in Fort Collins, Colo., the cost is $6,448?
这样的回答显然不够清楚，我继续问他所预计的平均费用是多少。
It doesn't seem any clearer, so I ask what he had anticipated the average fee to be.
问题之一在于高尔夫的昂贵开支：18洞的平均费用为40美元。
One problem is that golf is expensive: the median fee for 18 holes is $40.
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