求翻译：骑自行车还是一种很好的锻炼身体的方式，现在空气污染，骑自行车可以节约能源，利于环保。这是多么好的方法啊！是什么意思？

Cycling is also a good way to exercise, air pollution now, riding a bike can save energy, benefit of environmental protection. This is how good it is!