自行車曾經是中國城鄉最主要的交通工具，中國一度被稱為「自行車王國」。Bicycle used to be the leading means of transportation in China’s cities and villages, and China was once called 「the kingdom of bicycle」.
如今，隨著城市交通擁堵和空氣汙染日益嚴重，騎自行車又開始流行起來了。nowadays, with traffic congestion and air pollution becoming more and more serious in cities, riding a bicycle is becoming popular again.
近來，中國企業家將移動網際網路技術與傳統自行車結合在一起，發明了一種被稱為共享單車的商業模式。Recently,China’s entrepreneurs have combined mobile internet technologies with bicycle and invented the business model of biking-sharing.
共享單車的出現使騎車出行更方便，人們僅需一部手機就可以隨時使用共享單車。The appearance of shared bikes has made it more convenient for people to get around, and people can ride bikes at any time only with the of a mobile phone.
為了鼓勵人們騎車出行，很多城市修建了自行車道。現在，越來越多的中國人也喜歡通過自行車健身。To encourage people to travel by bike, many cities have built bike lanes. Now, more and more Chinese people like excising by riding bikes.