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现据有关可靠的史料考证，已经超过一百一十人之多。
According to the credible historical data, the number has been proved more than one hundred and ten.
据史料考证，历史上的黄土高原曾经是林草茂盛、环境优美、经济繁荣的区域。
According to the historical data, it was an area with dense forests and grasslands, good environment and flourishing economy.
本文的前两个部分以史料为主，介绍孤竹国建立与衰亡的过程及其疆域变迁、孤竹故城地理考证。
Based on the historical data, documents and local chronicles of related places, the paper introduces and makes some textual research on the kingdom's history.
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