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科二氏尿道冲洗扩张器 ... Franklin D. Roosevelt: The Four Freedoms富兰克林·罗斯福：四种自由 Mr. Speaker, members of the 77th Congress:第七十七次议会的众议议院长和议员们： I address you, the members of this new Congress, at a moment unprecedented in the history of the union.  I use the word “unprecedented” because at no previous time has American security been as seriously threatened from without as it is today.我向大家致辞，这次新议会的议员们，这一刻将成为协会的空前历史记录。我用“空前”是因为美国人的安全直到现在受到了真正的威胁。 ...