If a cell's defence mechanisms detect double-stranded RNA they destroy it, to protect against infection.

如果发现双链RNA就会迅速将其，保护机体免受病毒感染。

Some organisms use bioluminescence as a defence mechanism. Lighting up an attacker can make it more vulnerable to the attentions of others.

一些生物体利用生物光作为一种防御机制。照亮袭击者可让它们不那么容易引起其他生物注意。

When a person is ill, the body’s natural defence mechanisms come into operation.

【mechanism】生病时，人体内自然防御机制就会开始工作。

When my parents got divorced is when I started using humour as a defence mechanism.

我父母离婚后我开始用幽默来自卫。

Sometimes I wondered if it was a defence mechanism, whether the only way to cope with his life was to pretend it wasn't him it was happening to.

有时我想是否是一种防御机制，应对他生活唯一方法是否就是假装不是发生在他身上事情。

It is believed that the molecule emerged as a defence mechanism against invasive bacteria, plant pathogens and — We humans and an Asian tree shrew are the only mammals in the world known to tolerate or even seek out capsaicin.

据称，辣椒分子能够防御入侵细菌、植物病原体和-人类和一种亚洲树鼠是世界上已能耐受甚至寻找辣椒素哺乳动物。