In vertebrates, the immune system provides a multiple defense against internal parasites.

在脊椎动物中，免疫系统提供了对体内寄生虫的多重防御。

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A defense against rhinoviruses might nonetheless succeed by exploiting hidden similarities among the rhinovirus strains.

尽管如此，通过利用鼻病毒株之间隐藏的相似性，可能会成功抵抗鼻病毒。

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French troops in Canada built a fort to control passage to the lake as a defense against British troops moving north.

VOA: special.2009.01.05

Harold Bloom has written, and I think he's absolutely right, that Milton begins Paradise Lost with a powerful defense against lateness.

哈罗德·布卢姆写道，我认为他说得对极了，他说弥尔顿,在《失乐园》的开头对这些“晚“进行了有力的辩护。

耶鲁公开课 - 弥尔顿课程节选

This is one of the primary strategies that Milton develops, especially in the first two books of Paradise Lost, as a kind of defense against his dependence on classical literature.

这是弥尔顿发展出的早期策略之一，尤其是在《失乐园》的前两册书中,这似乎是在反驳他对古典文学的依赖。

耶鲁公开课 - 弥尔顿课程节选

It is a Strategic Defense Initiative aimed ultimately at finding a nonnuclear defense against ballistic missiles.

CNN: State of the Union Address

Next-generation firewalls (NGFWs) have evolved into the first line of defense against computer malware.

FORBES: Next-Generation Firewalls: What Makes Them Next-Gen

It is your last line of defense against the new barbarians at the gate.

FORBES: The Stealth Bombers: Bill Ackman, Bernard Arnault, and the Conundrums of Secret Positions