1 PBS的定义及优势国内外已有公共自行车交通系统(Public Bicycle System，PBS)的实践，但学术界尚未给出明确定义，将自行车交通作为准公共交通方式的研究基本处于空白。
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给出了公共自行车交通系统(PBS)的概念，分析总结了欧洲及国内部分城市PBS的实践与经验教训。
The paper delivers a conceptual definition of public bicycle systems (PBS), along with a summary of experience and lessons of PBS practice both in Europe and China.
这就是丹麦人骑自行车的原因，也就是丹麦拥有世界上最好的公共交通系统的原因。
That's why people in Denmark ride bikes or use one of the best public transport systems in the world.
现在就有很多员工选择骑自行车去上班，我们也有公共交通系统，20辆烧生物燃料的班车，是目前最环保的车。
We have a lot of people riding bikes to work now. We also run a bus service. We got 20 buses that run on bio-diesel fuel. They are the cleanest bus that you can buy.
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