Nevertheless, by hiding an identification code in a sample matrix on the answer sheet, Dr Gino and Dr Mogilner knew which matrix sheet each candidate had been given and thus who had cheated and who had not.

不过，吉诺教授和莫吉内尔教授其实事先已在答题卷上秘密标好对应试卷的身份代码，因此哪些人作弊、哪些人没作弊，他们是一清二楚的。