如今城市共享单车越来越流行，请你就此话题谈一谈共享单车的好处。 内容要点.. 1.方便快捷； 2.缓解交通压力，环保；
3.参考词汇：共享单车bicycle sharing 道路拥堵road congestion
With the development of technology, bicycle sharing is becoming a new trend as a means of transportation in many cities.
There are quite a few advantages of it. Firstly, bicycle sharing makes it convenient for people to move around. You can find a bicycle anywhere at any time when you want to go out for a cycling with a very low charge. Secondly，it relieves the traffic pressure caused by cars and buses，reducing road congestion. Meanwhile，as a green way of transport, it does good to the environment. What’s more，riding a bike is a good way of taking exercise, which is helpful for people to keep fit.