With the development of the technology ,there are plenty of ways of transportation all around the world, for instance: cars, bikes, flights and so on.They make our lives become more convenient and easier, however, i am interested in riding a bike. it is a great way to protect the environment and it can save petrol resources. in addition, it can not only overcome lots of the traffic problems. but also it is a good way to do excierse and keep healthy. i love riding bikes.
Air quality is getting worse now, and a major reason is that a large number of automobile exhaust emissions, cycling is no exhaust, you can do for us blue skies project contributions.
Cardiac function of bikes is to overcome the problems of one of the best tools. More than half the world's people are died of a heart attack, riding a bicycle can promote the legs blood circulation, it is easy to deposition of vascular peripheral blood pumping back to the heart, which at the same time enhance the micro-vascular tissue, which reinforced the \"collateral circulation\".
翻译：随着技术的发展，有很多世界各地的运输方式，例如： 汽车、 自行车、 航班等。他们使我们的生活变得更方便、 更容易，但是，我感兴趣骑一辆自行车。它是保护环境的好方法，它可以节省汽油资源。此外，它还可以不仅克服许多地段的交通问题。但它也是做 运动，保持身体健康的好方法。我爱骑自行车。现在的空气质量是越来越差了，其中很重要的原因就是汽车尾气的大量排放，骑自行车则完全没有尾气，可以为我们蓝天工程做点贡献。自行车是克服心脏功能毛病的最佳工具之一。世界上有半数以上的人是死于
心脏病的，骑单车能促进腿部血液循环，很容易把血管末梢的沉积血液抽回心脏，这同时强化了微血管组织，即强化了“附带循环”。
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