Skeptics have argued that a single impact would raise an asteroid's overall temperature very little and that asteroids would cool too quickly between impacts to accumulate much heat.

怀疑派认为，一次撞击只会使小行星的整体温度上升很小，而且小行星在两次撞击之间会迅速冷却，从而无法积聚大量热量。

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According to planetary scientist Robin Canup, all three of Pluto's satellites could trace back to a single impact.

据行星学家罗宾·卡纳普说，冥王星的所有三个卫星可以追溯回同一次撞击。

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There is a distinct difference in the strength characteristic of brittle materials between single impact and double impact or slow compression.

脆性材料单次冲击和二次冲击或低负荷压缩冲击性能方面有很大的差别。

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Main message? Each one of us makes a difference every single day we impact the world around us and if we would just think about the consequences of the little choices we make what we eat,wear,buy, how we interact with people,animals, the environment then we start making small changes and that can lead to the huge change that we must have."

VOA: special.2009.11.18

So, this is just one example of how these properties can already, even our understanding just talking about single atoms, can already make an impact in these biological systems.

这只是一个例子，通过它我们可以看到，尽管我们仅仅讲到了单个原子，但我们现在已经可以用它的性质来理解一些生物系统。

麻省理工公开课 - 化学原理课程节选

"In some of the governorates, have not a single member working, without any source of income, which is in turn having a huge impact on their ability to afford rented accommodation and their ability to buy food in a country where the public distribution system is failing quite badly,".

VOA: standard.2009.09.20

The new iPad had the biggest single impact on growth rates in the quarter, but Asus and Samsung made progress with their Transformer and Galaxy Tab product lines.

ENGADGET: Canalys: PC and tablet shipments hit new high in Q2 with Apple in the lead, HP next in line

The new MP who has made the single biggest impact on me is David Nuttall - the Conservative solicitor who won Bury North.

BBC: My pick of the 2010 intake of MPs

Any one of these losses will harshly impact single-parent families, children, people with disabilities and the elderly.

FORBES: Gov. Brown's Budget Forsakes California Women