·2,447,543篇论文数据，部分数据来源于NoteExpress
Several other French, Dutch and British firms are using foot power to keep the lights on.
法国、荷兰与英国的其他一些公司也正在设法借助脚部产生的能量让灯泡发光。
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Transport for London (TfL) is currently trialling eye-level traffic lights for cyclists and "Dutch-style" roundabouts.
BBC: 'Crossrail for bikes' set for London
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