骑自行车时一种很好的运动，而且，还不污染空气。
Bicycling is good exercise; besides, it does not pollute the air.
我喜欢偶尔骑自行车去野外呼吸新鲜空气。
Once in a while, I ride a bike to breathe fresh air in the field.
鼓励人们使用有助空气清洁的自行车。
They are encouraged to use bicycles, which are thought to help keep the air clean.
骑自行车是一种很好的运动，此外，还不污染空气。
Bicycling is good exercise; moreover, it won't pollute the air.
首先，在许多大城市，骑自行车能减少空气污染。
First, using a bicycle can greatly help reduce the air pollution in many big cities.
你通过汽嘴把空气打入自行车轮胎。
骑自行车使空气清新，使城市跟美好。
骑自行车使空气清新，使城市跟美好。
应用推荐