Owning a bicycle was a big deal to our children when they were little.
当我们的孩子还小的时候，拥有一辆自行车对他们来说是件大事。
At schools, children pump the water through a "bicycle system."
在学校，孩子们通过一种“自行车系统”泵水。
The bicycle saddle is too high for the children.
那辆自行车的坐鞍对小孩子们来说太高了。
The bicycle saddle is too high for the children.
那辆自行车的坐鞍对小孩子们来说太高了。
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