使用自行车有助于人们的身体健康，并可以极大地缓解交通阻塞。

Use bicycle contributes greatly to people's fitness as well as easing traffic jams.

youdao

使用自行车有助于人们的身体健康，并可以极大地缓解交通阻塞。

Use bicycle contributes greatly to people's fitness as well as easing traffic jams.

youdao