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braille[braille 词源字典]

braille: [19] Braille, the system of printing in raised dots for the blind, was named after its inventor, the French teacher Louis Braille (1809–52), himself blind from the age of three. He perfected his set of letter and number signs in 1834, but the term did not appear in English until the early 1850s.
[braille etymology, braille origin, 英语词源]