论战各方包括年老的步行者、骑自行车上班的环保主义者以及担心孩子安全的父母，不管是用婴儿车还是骑自行车带孩子上路的家长。
The issue has divided elderly pedestrians;environmentalists who ride bikes to work;and parents who worry about the safety of their children, whether in baby carriages or on bicycles.
他也期望你的孩子能安全的步行到学校。
He or she also want your kid to be able to walk to school safely.
如你们是步行，孩子骑自行车，你们怎样在保证安全的情况下同行？
If you're running and your child is biking, how do you stay together and stay safe on the road too?
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