U.S.Defense Secretary Robert Gates said in a Senate hearing that the missile tested by Iran was likely in the lower end of a 2,000 to 2,500 kilometer capability, but added U.S.officials could not yet say if it hit its target as claimed by Tehran.

VOA: standard.2009.05.20

So if we don't have to hybridize one of the p orbitals, we can actually end up with a lower energy situation, because now these s p 2 orbitals are 1/3 s character, and only 2/3 p character, instead of 3/4.

我们的杂化轨道就有更多的p轨道成分，所以它们的能量更高，如果我们不杂化这个p轨道，我们可以得到一个能量更低的情况。

麻省理工公开课 - 化学原理课程节选

Chinese tires make up and most are lower-end tires that retailers may have a hard time buying elsewhere.

VOA: standard.2009.09.14

It did not stem overpopulation, cut poverty, lower the divorce rate or put an end to unwanted pregnancies.

VOA: standard.2010.05.12

And the speaker of Russia's lower house of Parliament,Boris Gryzlov, says conditions in the republic are much improved and allow for an end to the anti-terrorist operation.

VOA: standard.2009.03.26

Wiman says part of what makes science cafs successful is where that conversation takes place: "We have it in the lower level of Herbie's restaurant in the Central West End."

VOA: standard.2010.05.04