One way oranother, the new sticker—whether based on a letter grade or some variation ofthe existing label—has to be ready for the 2012 model year.

不管是基于字母分级，还是现有标签的变种，新标签必须要在2012产品年能够投入使用。

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Then we can really start to look at the genetic variation within the species and gain insight into some of the genes involved in drug resistance or virulence.

然后我们才能真正地开始寻找该物种的种内遗传变异，并获得和耐药性或毒力有关的一些基因的信息。

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Height (or the causes of height variation) may be a factor, especially in some instances, like for those people who carry the Methuselah gene.

身高(或者身高差异的根源)可能是一个因素，特别是在某些情况下，比如对于那些带有玛士撒拉基因的人们。

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Adnan Pachachi, this month's president of the U.S.-appointed Governing Council, said he backs direct elections in principle but indicated the caucus-elected assembly, or some variation of this plan, would be more realistic in view of the June deadline.

CNN: Iraq leader: Direct vote could delay handover

But are accident black spots simply the result of random variation or are there some areas where speeding is a particular danger?

BBC: Speed Cameras

At least 30 other states require some variation of background checks, or fingerprinting, or both.

ECONOMIST: Fingerprinting teachers