环保交通的最佳选择--城市公共自行车

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在经历了过去几十年疯狂的“汽车普及战”之后,或者出于环保情愫,或者因为不堪拥堵,越来越多的人开始重拾单车旧梦。许多城市也开始试水公共单车租赁模式,以缓解交通和碳排放的压力。
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