Currency pegs are being tested to destruction on the fringes of Europe's monetary union in a traumatic upheaval that recalls the collapse of the Exchange Rate Mechanism in 1992.
限制流通使欧洲货币联盟在痛苦难忘的剧变中处于毁灭的边缘，正得到验证，令人想起1992年欧洲汇率机制的崩溃。
Most of the world's rain-forests are in danger of destruction by logger, farmers and developers. They are disappearing at a rate of 100 acres a minute.
世界上的许多热带雨林正在遭受伐木工、农夫和开发者的破坏。他们正在以每分钟100英亩的速度消失。
A mathematical model of air-to-ground attack was thus developed, with which the accessible zone, probability of first attack destruction, rate of target recognition and CEP were derived.
建立了空对地攻击的数学模型，导出了可攻击区、首攻概率、目标识别率和效能指标等计算方法。
A mathematical model of air-to-ground attack was thus developed, with which the accessible zone, probability of first attack destruction, rate of target recognition and CEP were derived.
建立了空对地攻击的数学模型，导出了可攻击区、首攻概率、目标识别率和效能指标等计算方法。
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