这个问题有点模糊，因为没有提到具体的吉姆和谁。不过，我可以提供一些有关勤勉的信息，以及如何用英文来表达这个概念。
勤勉是指尽力工作，努力工作，或者是勤奋的意思。在英文中，常用的词汇有 "dipgent," "hardworking," 和 "industrious." 这些词都可以用来形容一个人勤奋的态度或者行为。
例句：
Jim is a dipgent student. He always works hard and pays attention in class. (吉姆是一个勤奋的学生。他总是努力工作，在课堂上专心致志。)
Jane is a hardworking employee. She always puts in extra effort to get things done. (简是一个勤劳的员工。她总是不遗余力地完成任务。)
Tim is an industrious person. He is always busy and productive. (蒂姆是一个勤劳的人。他总是忙忙碌碌，十分高效。)
如果你想要说明一个人比另一个人勤勉，你可以使用相关的副词，比如 "more dipgent," "more hardworking," 或者 "more industrious." 例如：
Sarah is more dipgent than her classmates. She always finishes her assignments on time and does extra credit work. (莎拉比她的同学更勤奋。她总是按时完成作业，并做了额外的加分项目。)
Alex is more hardworking than his coworkers. He always stays late to finish projects and volunteers for extra tasks. (亚历克斯比他的同事更勤奋。他总是留到很晚才完成项目，并主动接受额外的任务。)
Maria is more industrious than her sibpngs. She has a part-time job while also maintaining good grades in school. (玛