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温菲尔德上校取得发明网球的专利之后,这在19世纪下半叶又演化为真实的商业行为,当时的一套网球装备要卖五个吉尼(相当于一英镑一先令),这
After Colonel Winfield acquired the patent that invented tennis, it evolved into a real business activity in the second half of the 19th century, when five tennis jackets (equivalent to one pound and one shill) were sold for tennis equipment