Shared bicycles have become a popular mode of transportation in many cities around the world. These bicycles are convenient, environmentally friendly, and affordable for most people. They are a great way to travel around the city, reducing traffic congestion and air pollution, while also providing an economical and healthy way to get around. Shared bicycles are a great addition to our transportation options, and I believe more people should use them to help improve our cities.
译文：
共享单车已成为世界各地很多城市的一种时尚交通方法。这类自行车便捷、环保，对大部分人来讲负担得起。它们是环城旅游的好办法，可以降低交通拥堵和空气污染，同时提供一种经济健康的方法。共享单车是大家交通选择的要紧补充，我相信更多人应该用它们来帮助改变大家的城市。