Second,driven by man power, it doesn't need fuel. Hence it has nothing to do with air pollution and energy crisis. Third, China is still a developing country. Most people can afford a bicycle, but not a more advanced vehicle car.

      With so many advantages, bicycle will remain to be an important means of transport in China in the following years. But I think with the rapid development of Chinese economy, more and more Chinese will own a car. Cars will surely substitute bicycle in the future.

作文地带点评：上面这篇短文是在不同的事物之间进行比较, 尽管没有明确地说明另一个事物的情况, 但在论述一个事物的同时, 另一种事物的特点也就很容易地体现出来了。