BBC News with Iain Purdon President Barack Obama has sought to reassure the American people following revelations that US intelligence agencies have conducted large-scale surveillance of telephone and internet activity. _____________________________ The president said the measures were needed to give Americans safe while protecting their privacy. 伊恩.博登为您播报BBC新闻 自美国情报部门对电话和互联网行为实施大规模监控的消息遭披露后,巴拉克`奥巴马总统力图消除国内民众对此事的疑虑._________________________________总统还表示,政府需要采取必要措施旨在保护公民隐私的情况下亦保障他们的安全.
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