今天我们要学的词是 undocumented. Undocumented 形容词，无证的，非法的。New Department of Homeland Security guidelines give immigration officers more power to go after undocumented immigrants. 美国国土安全部新的指导方针增加了移民官员抓捕非法移民的权力。皮尤研究中心的数字显示，One in four of the 200,000 immigrants living in Philadelphia are undocumented. 费城20万移民中，有四分之一是非法移民。好的，我们今天学习的词是 undocumented, undocumented, undocumented...