Twitter 上的 Dutch Cycling Embassy:"Blue-and-yellow OV-fiets may be the unsung hero of the Dutch public transport system. Last year, 4.2 million journeys were made on those 20,500 bicycles, whose only drawback may
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Cycling in the Netherlands: "Fiets not feet" - An outside perspective on Dutch Cycle Culture – DutchReview
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OV Fiets - Dutch Bike Rental Scheme - AmsterdamTips.com