自行车是一种既便宜又环保的交通工具。
Bicycle is a cheap and environment-friendly means of transport.
从18世纪中期问世以来，自行车一直是一种广泛使用的交通工具。
Bicycles were first developed in the mid-18th century and have long since been used as a form of transport.
最重要的是，骑自行车对环境有益，因为自行车不需要耗油，它是一种零污染的交通工具。
Most important of all, it is beneficial to the environment to ride a bicycle because the bike doesn't consume petrol; it is a pollution-free transport.
在中国，自行车是一种传统的交通工具，这种环保的交通出行方式现在仍然非常普及。
The bicycle is the traditional form of transport in China and this sustainable way of travelling is still one of the most popular.
在中国，自行车是一种传统的交通工具，这种环保的交通出行方式现在仍然非常普及。
The bicycle is the traditional form of transport in China and this sustainable way of travelling is still one of the most popular.
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