A Drexel University professor who received death threats after posting several controversial tweets said Thursday he is resigning because the year-long harassment has made his situation "unsustainable."
원문출처 : http://www.cnn.com/2017/12/28/us/drexel-university-professor-resigns/index.html
원문출처 : http://www.cnn.com/2017/12/28/us/drexel-university-professor-resigns/index.html