2·When my assistant became obstinate I had to pull rank and insist that he obey.
当我的助手变得倔强不听话时，我只得运用职权，坚持要他服从。
3·To find a quantitative way to rank players, co-author and Northwestern graduate student Josh Waitzman first wrote software to pull play-by-play statistical information from the 2008 Euro Cup website.
为了找到一种方法量化球员的表现来排名，该论文的合作作者，西北大学毕业生 Josh Waitzman 首先写了一个软件，从 2008 欧洲杯网站上下载了比赛的详细统计数据。