So that's a very tight timeline," Presidents Obama and Medvedev have instructed their arms negotiators to provide a progress report by July when the American leader is expected to visit Moscow for a summit meeting.

VOA: standard.2009.04.08

It's...I don't think the economic integrations are so tight so far... that you can claim that it's that...you know... raising all the boats.

我觉得至今为止,经济融合并不是很理想。,理想到，如你所说。,足以水涨船高的地步。

普林斯顿公开课 - 国际座谈会课程节选

But Russia itself has no worse loss for the United States right now could find ways to keep us so tight down in the Middle East for a decade that we could do nothing else.

俄罗斯现在还没有对美利益造成太大损害,有办法,让我们紧紧围绕在中东问题上,在十年内我们只有束手无策。

普林斯顿公开课 - 国际座谈会课程节选