进入到二十一世纪,科技在不断的进步,战争作为一种严重的军事冲突形式,其形式也在不断地变化。美国是自上世纪90年代以来参加战争最多的国家,虽然美军的军事科技在世界上是一流的,但是战争无可避免的将因为作战时间的增长使更多的士兵和无辜贫民死亡。 Into the 21st century, science and technology are making continuous progress. As a serious form of military conflict, the form of war is constantly changing. The United States is the country that has participated most in wars since the 90s of last century. Although the military technology of the U.S. military is world-class, the war inevitably will result in more soldiers and innocent people being killed as a result of the war.