A) It reminds them of an ancient set of biological defence mechanisms.

A) 这让他们想起了一套古老的机制。

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

如果发现双链RNA就会迅速将其销毁，以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.

一些体利用光作为一种机制。照亮袭击者可以让它们不那么容易引起其他的注意。

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

【mechanism】病时，人体内的自然机制就会开始工作。

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。

My research suggests that horror works by exploiting an ancient set of biological defence mechanisms an evolved fear system, which we share with other animals.

我的研究表明，恐怖是通过利用一套古老的机制——我们与其他动共享的一种进化的恐惧系统——发挥作用的。

A part of me, that dates back to a defence mechanism of childhood, needs to put some walls between us because proximity feels at some level odd and frightening.

我内心的一部分，源于童年的机制，需要在我们之间设置一些界限，因为在某种程度上，亲密会让人感到奇怪和害怕。

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.

有时我想知道这是否是一种机制，应对他活的唯一方法是否就是假装这不是发在他身上的事情。

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，辣椒分子能够入侵的细菌、植病原体和-人类和一种亚洲树鼠是世界上已知的能耐受甚至寻找辣椒素的哺乳动。