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Backtrace:
File: D:\wwwroot1\alipdf.com\app\core\DS_Controller.php
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Function: __construct
File: D:\wwwroot1\alipdf.com\app\core\DS_Controller.php
Line: 175
Function: __construct
File: D:\wwwroot1\alipdf.com\app\controllers\Search.php
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Function: __construct
File: D:\wwwroot1\alipdf.com\index.php
Line: 316
Function: require_once
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1前言 小狗看到了怎样的世界？ 1 在很小的时候，我时常会溜进父亲的书房，翻看他摆在桌 上的那些报告。我的父亲是一位数学家。他用铅笔在绘图纸上 写东西：一长串一长串工整的数字和图形。我会坐在他座椅的 边缘，带着疑惑和好奇一页页地...
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