49. For the majority of people， reading or learning a new skill has become the focus of their lives and the source of their happiness and contentment after their retirement.
对大多数人来讲，退休以后，阅读或学习一项新技术已成为他们生活的中心和快乐的来源。
50. For people who want to adopt a healthy and meaningful life style， it is important to find time to learn certain new knowledge. Just as an old saying goes： it is never too late to learn.
对于那些想过上健康而有意义的生活的人们来说，找时间学习一些新知识是很重要的。正如一句老话所说：学习永远不会太迟。
51. There is a general debate on the campus today over the phenomenon of college or high school students‘ doing a part-time job.
对于大学或高中生打工这一现象，校园里进行着广泛的争论。
52. By taking a major-related part-job， students can not only improve their academic studies， but gain much experience， experience they will never be able to get from the textbooks.
通过做一份和专业相关的工作，学生不仅能够提高他们的专业能力，而且能获得从课本上得不到的经验。