In a purely biological sense, fear begins with the body's system for reacting to things that can harm us—the so-called fight-or-flight response.

从纯粹的生物学意义上讲，恐惧始于身体系统对可能会伤害我们的事情的反应，也就是所谓的“战或逃反应”。

youdao

Q: How can the fight-or-flight response lead to death?

问：“斗争还是逃避”反应怎么会导致死亡？

youdao

The flight or fight response includes a rapid heartbeat and dry mouth, trembling hands.

战或逃的反应包括心跳加速，嘴巴发干，双手颤抖。

youdao

Researchers believe the increase in heart rate might demonstrate what they call the fight or flight response.

VOA: special.2009.08.18

When we hold our breath, the brain is momentarily oxygen deprived and hits the flight or fight response, fueling a more emotional reaction to the words shooting out of our fingers.

CNN: Do you get e-mail rage?

When you work based on fear, you create adrenaline from the fight or flight response.

FORBES: The Hidden Work-Life Balance Crisis Among Entrepreneurs

"It's highly tied to the fight or flight response, " says George Preti, a faculty member at Monell Center.

WSJ: Why We Sweat When We're Stressed