During a speech Wednesday at the RSA conference, Melissa Hathaway,acting senior director for cyberspace for the National Security and Homeland Security councils, said the risk was palpable.是什么意思_During a speech Wednesday at the RSA conference, Melissa Hathaway,acting senior director for cyberspace for the National Security and Homeland Security councils, said the risk was palpable.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句