1809年的今天，盲文系统的发明者路易·布莱尔在法国出生。

1809 - Louis Braille, inventor of a reading system for the blind, was born in France.

youdao

1809年的今天，盲文系统的发明者路易·布莱尔在法国出生。

1809 - Louis Braille, inventor of a reading system for the blind, was born in France.

youdao