The mysterious sonic attack on US diplomats stationed in Cuba is raising questions about weapons that sound more like something out of James Bond than reality.
원문출처 : http://www.cnn.com/2017/08/24/politics/cuba-sonic-attack-questions/index.html
원문출처 : http://www.cnn.com/2017/08/24/politics/cuba-sonic-attack-questions/index.html