反射

反射 refers to a reflex, an automatic physical response to a stimulus. It is often used in both medical and metaphorical contexts, describing an immediate reaction without conscious thought.

The character 反 (fǎn) means 'reverse' or 'opposite,' while 射 (shè) originally meant 'to shoot' or 'to emit.' Together, they suggest a sudden, direct response, like a bullet being shot back, which aligns with the idea of a reflex action.

In daily life, 反射 can describe both physical reactions, such as pulling your hand away from something hot, and emotional responses, like a person's instinctive reaction to a situation. It is commonly used in psychology and physiology to discuss involuntary behaviors.