词汇 | dalton |
词源 | Dalton1920 in reference to a plan or system of school education designed by Helen Parkhurst, from Dalton, Massachusetts, U.S., where it was first adopted. For Daltonism (a reference to English chemist John Dalton), see color-blindness. Daltonian, in reference to Dalton's work, is attested by 1813. updated on June 25, 2018 |
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