《宋书·志·卷十二》
迟疾差率，四万三千五百八十七。
迟疾差率，四万三千五百八十七。
Fast and slow rate, 43,587.
<s>[INST] Identify the key themes in this Classical Chinese text and explain them in English: 迟疾差率，四万三千五百八十七。 [/INST] Fast and slow rate, 43,587.</s>
Identify the key themes in this Classical Chinese text and explain them in English: 迟疾差率，四万三千五百八十七。
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Fast and slow rate, 43,587.
assistant