本文作者： Zhang Xuelun, The High School Affiliated With Renmin University
今天的幸福来源于先辈们不懈的努力。WHEN you’re walking among the skyscrapers (摩天大楼) in Beijing, China’s capital, you’re likely to gaze (注视) up and let out a big “wow”. But do you ever think about the stories behind the magnificence (宏伟)?