U.S.officials say no part of the three-stage rocket reached orbit and the launching was a thinly-disguised test of a long-range ballistic missile that was banned under a 2006 U.N.resolution.

VOA: standard.2009.04.15

We can think about the Lyman series, which is 1 where n equals 1. We know that that's going to be a higher energy difference, so that means that we're going to be in the UV range.

我们可以来看看Lyman系,也就是n等于,我们知道它的能量差更大,所以它在紫外光区内。

麻省理工公开课 - 化学原理课程节选

South Korea warns any long-range launch by the North will be a violation of a U.N.resolution passed in 2006, when North Korea conducted long-range missile and nuclear weapons tests within months of each other.

VOA: standard.2009.03.12

According to CBS, Saddam also flatly denied that Al Samoud 2 missiles violated U.N. range restrictions and indicated he has no plans to destroy them, as demanded by U.N. weapons inspector Hans Blix.

CNN: CBS: Saddam challenges Bush to debate

The best is in the Sahara desert, particularly in Niger's Air mountains, in the Tibesti mountains of northern Chad and southern Libya, and in south-east Algeria's Tassili n'Ajjer range.

ECONOMIST: African rock art

TARA's founders, raves about a recent find in the Tassili n'Ajjer range: an anatomically perfect four-metre-long carving of a hippo hunted by an Egyptian-looking figure with a superbly sinuous bow.

ECONOMIST: African rock art