孩子们在沿街滚铁环。
The boys are bowling their hoops along the road .
男孩子们在街上滚铁环。
The boys rolled their hoops down the street .
孩子正在滚铁环。
The child was rolling a hoop .
对面屋子里脸色红润的孩子们滚着铁环跑过去。
The rosy children opposite run past with hoops .
滚铁环滚铁环滚铁环