All his life Darwin carried small hard notebooks in his pocket, later transcribing thoughts and observations into larger books.

达尔文一生都有在衣服口袋里装硬皮小笔记本的习惯，他过后会将记在小笔记本上的想法和观察记录誊写到大一些的笔记本中。

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He began transcribing books into Braille for the blind and persuaded other lifers to do the same.

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