1·The trebuchet is a long distance heavy offensive and defensive weapon in the ancient China.
抛石机是我国古代一种远程重型战具，应用于攻击防守战中。
2·BAE Systems will develop an interim all-quadrant defensive weapon system for the CV-22 Osprey aircraft.
BAE系统公司将为CV - 22“鱼鹰”飞机开发一种临时的四象限防御武器系统。
3·This is the most versatile, since it balances offensive (the weapon) and defensive (the shield).
这种类型的好处是比较全面，因为它平衡了进攻（武器）和防守（盾牌）。