You can join them, by following Eckberg and his class as they track the adventures of Dan and Steve Buettner, two world-class bicyclists from U.S.A..

您可以跟随Eckberg和他的班级加入他们的行列，他们跟踪来自美国的两位世界级自行车手丹和史蒂夫·布特尼的冒险经历。