There were countless bicycle shops in turn-of-the-century America, but only one where two brothers with their unheralded persistent experimentation added wings to their wheels.

• 在这个世纪开始时，美国有无数个自行车店，但只在一家自行车店里，有两兄弟通过他们持续不断的试验，替车轮装上了翅膀。