12.walking bus
12.步行公交车
Definition: an organized group of children who walk to school together accompanied by two or more adults.
定义:由两名或更多的成年人陪同的、组织起来步行上学的孩子们。
Quotation: For children too young to walk on their own, parents can walk with them. Better still, organise a walking bus and pick up other children along the way.
引文:对于年龄太小还不能自己步行上学的孩子们,家长可以陪同他们。更好的办法是,组织一个步行公交车,沿途接上其他孩子一起去学校。