So again, I want to thank my colleagues for making this unprecedented gathering a day of unprecedented progress in confronting one of the greatest threats to our global security.

因此，我要再次感谢我的同事们把这次史无前例的聚会变成我们在应对全球安全最大威胁方面取得前所未有的进展的一天。

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We are living in unprecedented times and we need unprecedented levels of global coordination.

我们生活在前所未有的时代，需要前所未有的全球协调。

youdao

This is an unprecedented gathering to address an unprecedented threat.

这是一次为应对前所未有的威胁而举行的史无前例的会议。

youdao

MSF gave filmmaker Mark Hopkins and his crew unprecedented and uncensored access to its field operations in parts of Africa.

VOA: standard.2010.06.29

From 1641 to 1643, there had been an unprecedented explosion of printing and publishing in England.

从1641年到1643年，在英格兰出现了,空前的印刷出版狂潮。

耶鲁公开课 - 弥尔顿课程节选

are providing unprecedented learning resources.

能提供前所未有的学习资源。

关于网络世界 - SpeakingMax英语口语达人

Today we've made meaningful and unprecedented -- made a meaningful and unprecedented breakthrough here in Copenhagen.

WHITEHOUSE: President Obama at Copenhagen Climate Change Conference

The unprecedented volume of litigation has driven an unprecedented level of interest in the subject from mainstream outlets like NPR and the Economist.

FORBES: Google Should Publicly Oppose Software Patents

In this precursor to Davos which sought to elicit practical solutions to intractable problems, Schwab argued as he has for forty years, that unprecedented change implies unprecedented opportunity.

FORBES: The Power to Convene