考研英语高频词汇defense [dɪ'fens] n.防卫,保护 <历年真题考查频次:4次>真题复现1:Several massive leakages of customer and employee data this year—from organizations as diverse as Time Warner, the American defense contractor Science Applications International Corp and even the University of California, Berkeley—have left managers hurriedly peering into their intricate IT systems and business processes in search of potential vulnerabilities.(2007年英语一第四篇阅读理解P2)