During the time of the roman Empire (37 BC-476 AD), it was very difficult to make purple dye.

在罗马帝国时期（公元前37年-公元476年），制造紫色染料非常困难。

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Though it seems almost laughable now, up to that point if I wanted to watch a television show, movie or sporting event I had to be physically present at my television during the time of broadcast.

这个录像机以现在的眼光看是有点可笑，但当时的情况是，如果我想看某个电视节目、电影或者体育比赛，我就必须在节目播出的时候亲自守在电视机前。

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Homesickness is always with me, particularly during the time of some Chinese traditional festivals.

思乡病时刻伴随着我，特别是过中国的传统节日的时候。

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Miller's television drama, "Playing for Time", told of an orchestra of prisoners at the Nazi death camp,Auschwitz, during World War Two.

VOA: special.2009.11.29

And, during the time of his interactions with Thompson and Rutherford, he got to thinking about a way to explain the observations of Rutherford.

通过在这段时期,和汤姆逊及卢瑟福的交流，他想到了一个办法,来解释卢瑟福的观察。

麻省理工公开课 - 固态化学导论课程节选

We're going to spend quite of bit of time talking about it during the third week of the course.

我们在这门课程进行到第三周时,会花一定的时间来讨论它

耶鲁公开课 - 生物医学工程探索课程节选

No one claimed responsibility for the attack and it was unclear if Shirdon was in his office during the time of the attack.

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The guarded approach to hiring that has been evident over the last few years was sustained in part by concerns over the fiscal cliff during the time of the survey.

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"One of the things during this time of the year ... is that if you lose, it's final, " coach Mike Krzyzewski said.

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