英语语法分析

Massachusetts Senator John Kerry hunts for pheasant during a campaign stop in Colo, Iowa during his 2004 run for the presidency.

在2004年竞选总统期间，在爱荷华的科洛作活动停留时，马萨诸塞州参议员约翰·克里捕猎雉鸡。

A new type of solar thermal system for homes that can provide heat, hot water, and electricity is being tested in Boulder, Colo., over the next few months.

未来几个月，科罗拉多州博尔德市将测试一种新型的家用太阳能热系统，该系统可以提供热量、热水和电力。

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?

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？