One report tells of a totally blind boy who could ride his tricycle at good speed round the block near his home, using facial vision.
有一则报道讲述了一个完全失明的男孩，可以用面部视觉围绕他家附近的楼栋快速骑三轮车。
But Ada had never learned to ride a bike. Ada was blind.
不过艾达因为失明，所以从来没有学过骑自行车。
But Ada had never learned to ride a bike. Ada was blind.
不过艾达因为失明，所以从来没有学过骑自行车。
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