科学家们希望开普勒在其为期3至4年的使命中，能找到几十个适合居住的行星。

Scientists hope that Kepler could find dozens of habitable planets during its three-to-four-year mission.

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用户只从一个简单的搜索框就能做他们能想到的任何事情。这就是搜索的未来，这就是我们的使命。

Users will be able to do almost anything they can think of from a single simple search box. That is our mission for the future of search.

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国际原子能机构缺乏有效执行其使命的手段或权威。

The International Atomic Energy Agency doesn’t have the tools or authority to carry out its mission effectively.

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And if they can identify those things, they can think about a life work, they can think about their calling.

如果他们能明确这些东西，他们就能思考一生的工作，思考一生的使命召唤。

普林斯顿公开课 - 人性课程节选

And that's our obligation to send them to war only when we have to, and only when we know they can actually achieve their mission is a key difference between what I advocate and what the neo-cons advocate.

我们有义务,在必须的时候，送他们上战场，我们必须确保,他们一旦奔赴战场就能完成使命,这是重大的不同,我和新型保守派主张的不同之处主要在此。

普林斯顿公开课 - 国际座谈会课程节选