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Now it is spring in the northern part of the world so it is time to celebrate that season.

VOA: special.2010.03.15

What was neat about it is before that time, the predominant species to use for air conditioning or refrigeration was ammonia.

在这之前是很整洁的，之前最主要的用于空调或者冰箱的,物质是氨。

麻省理工公开课 - 固态化学导论课程节选

One is time, that I think it takes certain amount of time to shed the thoughts, the anxiety in everything else.

第一是时间，要想,摆脱一些想法，摆脱焦虑，是需要一定的时间的。

普林斯顿公开课 - 人性课程节选

"It is time that is against him, it is not time that is against us, " he said.

BBC: Hague: Libya conflict 'sustainable indefinitely'

But I think much more than that is, it is the times -- that I think that it is a time when economic issues are so incredibly pressing.

WHITEHOUSE: Press Briefing

The only surprise is that this time it is less generous than usual.

ECONOMIST: Justice in France