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。

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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。

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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）。

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His shield, in addition to being a defensive thing, is also potentially an offensive weapon.

他的盾牌,除了能提供防御和保护之外,同样也是一个潜在的有力武器

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Xolair works by targeting an immune-system molecule called immunoglobulin E (IgE), a crucial defensive weapon that goes into overdrive in many patients with allergic asthma.

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In limited-overs matches, this has the effect of also making it a more effective defensive weapon: Many batsmen are less confident against spin bowling, which makes them less bold in attack.

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We have this incredibly powerful alliance that is multidimensional and involves a whole range of coordination, training activities, making sure that there's interoperability with respect to various weapon systems and our defensive capabilities.

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