……课。这是我在研究生期间极少数遇到极差劲教授的经历之一。他是来访问六个月的，你能明显看出他根本不想教书。他用了一本已经绝版的书（Bondy 和 Murty 写的《Graph Theory With Applications》），这意味着我连看个书都得专门跑去图书馆。他讲课的深度完全超出了我们的水平，而且他甚至真的不肯告诉我们他的办公室在哪，就为了不用回答……
…class. It was one of the only times I had a really bad professor in grad school. He was visiting for six months, and you could really tell he didn't want to be teaching. He used an out of print book (Graph Theory With Applications by Bondy and Murty), which meant I had to go to the library to even read it. He lectured at a level that was beyond us, and he literally wouldn't tell us where his office was, so he wouldn't have to answer…
《An Introduction to the Theory of Numbers》（Niven、Zuckerman 和 Montgomery 著） 《Graph theory with applications》（JA Bondy 和 USR Murty 著，网上有公开资源）
An Introduction to the Theory of Numbers (Niven, Zuckerman and Montgomery) Graph theory with applications (JA Bondy and USR Murty, available online)
……课。这是我在研究生期间极少数遇到极差劲教授的经历之一。他是来访问六个月的，你能明显看出他根本不想教书。他用了一本已经绝版的书（Bondy 和 Murty 写的《Graph Theory With Applications》），这意味着我连看个书都得专门跑去图书馆。他讲课的深度完全超出了我们的水平，而且他甚至真的不肯告诉我们他的办公室在哪，就为了不用回答……
…class. It was one of the only times I had a really bad professor in grad school. He was visiting for six months, and you could really tell he didn't want to be teaching. He used an out of print book (Graph Theory With Applications by Bondy and Murty), which meant I had to go to the library to even read it. He lectured at a level that was beyond us, and he literally wouldn't tell us where his office was, so he wouldn't have to answer…