读写网上个月介绍过绿鹅(green goose)，这是一个装有以太网连接的绿鹅蛋，它可以监测一个人用骑自行车代替开车的里程数。
We last month about green Goose, which is a green egg with an Ethernet connection that can sense how many miles a person has ridden on their bicycle instead of a car.
Kopra被Bowen替换是因为他在周六骑自行车时受伤。 这种因宇航员个人原因导致美国宇航局换人已经是数周内的第二次。
The swap-out of Kopra, who was injured while biking on Saturday, with Bowen was the second crew personnel issue NASA faced in as many weeks.
骑自行车旅行的距离平均降幅为10英里；坐公交旅行的里程数降幅最大，为155英里。
The average distance of traveling by bike decreased by 10 miles while that by local bus saw the greatest drop by 155 miles.
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