这种脚踏三轮车是小镇里很多人的交通和谋生工具。
Pedicabs like this are the means of transportation, and livelihood, for a lot of people in this small town.
如果你想到北京狭窄的胡同中探秘，脚踏三轮车是值得一坐的。
Tricycles are worth using if you want to explore the narrow alleys of old Beijing.
他建议患者骑三轮车，或使用固定脚踏车或训练器——这是设备将公路自行车转变为原地脚踏车。
He recommends that patients ride tricycles, or use stationary bikes or trainers - devices that turn road bikes into stationary ones.
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