This week, under this very roof, we have a once-in-a-generation opportunity to enhance the existing international trading environment;

这个星期，我们有一个非常难得的机会，共聚一堂，优化现有的国际贸易环境；

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"While our primary focus is on debt reduction, we are in a market with a once-in-a-generation opportunity to acquire vessels at highly attractive prices," said chief executive ion Varouxakis.

“当我们的首要注意力放在消减债务，我们正处在一个千载难逢的机会中——用极有吸引力的价格买船，”公司总裁Ion Varouxakis说。

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Handy and handymax dry bulk specialist FreeSeas has identified the current market turmoil as a historic opportunity to acquire vessels that may come only once in a generation.

小件和干散杂货运输专业公司FreeSeas认为，目前这个市场的混乱是一个历史性的买船机会，这种机会也许一生只能遇到一次。

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He added that he had not changed his mind that the vote was a once-in-a-generation opportunity.

BBC: Alex Salmond tells conference 'the nonsense ends' in 2014

Doha represents a once-in-a-generation opportunity to help millions in the developing world rise from poverty and despair.

NPR: President Bush's Remarks on the World Agenda

Mr Miliband said the Leveson report provided a "once-in-a-generation opportunity for real change" and backed an all-party approach.

BBC: UK Politics