Satellites are crucial to modern warfare.

卫星是古代战斗的要害。

Nearly 80, 000 Americans are deployed in Afghanistan, Exum said, while 2.2 million played Modern Warfare 2 on Xbox Live during a single day last fall.

部署在阿富汗的有80,000美国人，Exum说，而去年秋天一天在Xbox Live上玩《现代战争2》的就多达220万。

The biggest hit was "Modern Warfare 2", released in November, which became the fastest-selling game in history, selling 7m copies worldwide on its first day.

11月推出的《现代战争2》是最热门游戏，仅发售第一天就在全世界卖出了700万份，成为有史以来卖的最快的游戏。

During the Yugoslav wars, the city on the Miljacka River was besieged from April 1992 until February 1996, believed to be the longest siege in modern warfare.

在南斯拉夫的内战中，这个在米加卡河边的城市于1992年4月到1996年2月被包围，是现代战争史上最长的围城。

Signed digraph is used to model the dynamic system problems. It is used more and more popular in the modeling of the complicate process of modern warfare.

影响图方法是一种规范化系统动力学建模方法，近年来被越来越多地应用于对复杂战争过程的建模之中。