But before telling you about this let me sort of Go through some of the hypothesis that we have and That we are now testing about why the subject is Difficult and why these materials assembled what We have assembled them might be useful.

但是谈那之前我要说说,我们之前的一些假设,我们现在正在测试为什么这个学科很难,以及为什么我们整合这些资料是有用的,我们认为把它们整合起来或许有用。

麻省理工公开课 - 媒体、教育、市场课程节选

Any manufacturer I sell an ingredient to has to follow the same set of guidelines so more often than not our ingredients goes through all this testing a second time when being evaluated for formulation, nevermind maybe a 3rd or 4th after they complete and are evaluating a finished pill.

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But King Abdullah will need all his considerable skills to steer this country through some testing times ahead.

BBC: NEWS | Programmes | From Our Own Correspondent | 'Testing times' ahead for Saudi King

He made his conclusions by running the numbers for each game this year through a statistical regression and confirmed the results by testing games from previous years.

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