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https://www.gwern.net/docs/spaced-repetition/1921-thorndike-educationalpsychology-v2-thepsychologyoflearning.pdf#page=188
您即将离开知乎,请注意您的帐号和财产安全。
https://www.gwern.net/docs/spaced-repetition/1921-thorndike-educationalpsychology-v2-thepsychologyoflearning.pdf#page=188