“The generals feel cornered, and that makes them dangerous,” says a veteran military observer.

一位资深军事观察员说道：“将军们若感到走投无路了，让他们将变得有危险性。”

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The observer sitting problem is important in terrain visibility analysis and it is widely used in military, telecom, animal protection and so on.

观察点设置问题是地形可视性分析中的一类重要问题，在空间信息辅助决策、电信、野生动物保护等领域有着广泛的应用。

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"It's First World War stuff up there, " says a Western military observer in Colombo.

CNN: THE ROAD OF NO RETURN

Robert Mood, the U.N. chief military observer in Syria, said the Syrian government of President Bashar al-Assad had committed to Annan's peace plan.

CNN: 'Friends of Syria' set to meet in Paris

The team could retain its military observer capability and continue its fact-finding work, but with a limited scope in light of the violence in Syria, the report says.

CNN: U.N. head outlines options for Syria mission