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Brown dwarfs are also thought to be common, but there are only a few hundred known at this time because they are so difficult to see.

褐矮星也很常见，但由于它们太难以被观测，因此到目前为止已知的褐矮星只有寥寥几百。

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That needs to be understood. But this time, we need to put the story of emancipation at the center of this narrative, because what really transformed the United States, were not those battles.

VOA: special.2011.04.09

Now next time, in my lecture on introducing you to Judaism, I'll talk about the importance of at least two of these empires, because they're very important for the history of Palestine and Israel at this time.

下次课讲犹太教时，我会讲到至少其中两个帝国的重要性，因为他们对当时,巴勒斯坦及以色列影响非常大。

耶鲁公开课 - 新约课程节选

and I'm going to move a little bit quickly through all this because I want to leave time for a few questions at the end of the lecture.

我要加快进度,因为我想留点时间,最后回答你们的问题。

耶鲁公开课 - 心理学导论课程节选

Because at this time if we get this blurring line, confusing the roles of the different actors, we are no longer valid for the purposes we were created for.

BBC: Viewpoint: 'Our concerns are the civilians'

He is sure that the status of no fatalities will change, because at this time there is nobody to perform search and rescue operations in fallen buildings because the police force is stretched to the limit and just patrolling the streets.

BBC: NEWS | Have Your Say | Hurricane season: Your experiences

Copeland carries a lot of guilt from this because at the time of the crime he had sneaked off to make out with a girlfriend.

FORBES: Fact and Comment