Presently, in big cities like Shanghai and Guangzhou, bicycle-sharing system has becomeincreasingly popular. A large number of shared bikes can be found and rented at a low price.Moreover, you can park the bike almost anywhere you like. Urban transportation has thus been made much more convenient and even 　　revolutionized.

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　　However, along with its rapid development, bicycle-sharing system also brings some problems, including random parking, vandalism and possession of shared bikes, etc.

　　To solve these problems, there are some measures for the authorities to take. Firstly, the government could implement more strict laws and rules to regulate the operation and management of bicycle-sharing system. Secondly, the public should raise their awareness of using shared bike reasonably. Lastly, urban transportation system should be upgraded and improved to accommodate automobiles, bikes and pedestrians.

　　To conclude, a sensible attitude should be held toward bicycle-sharing program. With effectiveand efficient measures taken, and efforts made by those involved, it can be expected that bicycle-sharing system will play a contributive and constructive role in urban public transportation.

　　【参考译文】

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　　共享单车之我见

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　　目前，在上海和广州这样的大城市，自行车共享系统已成为越来越受欢迎。大量的共享自行车可以找到并出租，价格低廉，而且你可以把自行车停放在你喜欢的任何地方。城市交通因此变得更加便利，甚至革命化。

　　然而，随着自行车交通的迅速发展，自行车共用系统也带来了一些问题，如乱停车、故意毁坏公物、共用自行车等。

　　为了解决这些问题，当局采取了一些措施。首先，政府可以执行更严格的法律法规，规范自行车共用系统的运营和管理。第二，公众应该提高合理使用共用自行车的意识。最后，城市交通系统应升级改造，以适应汽车、自行车和行人。

　　最后，应该对自行车共享计划采取明智的态度。以有效地采取措施，通过人的努力，可以预期的是，自行车共享系统将在城市公共交通中发挥积极和建设性作用。