an automatic instinctive unlearned reaction to a stimulus 同义词：reflex response, reflex action, instinctive reflex, innate reflex, inborn reflex, unconditioned reflex, physiological reaction,
without volition or conscious control; "the automatic shrinking of the pupils of the eye in strong light"; "a reflex knee jerk"; "sneezing is reflexive" 同义词：automatic, reflexive,
A reflex action, differently known as a reflex, is an involuntary and nearly instantaneous movement in response to a stimulus.Purves (2004).
例句与用法
1.
A law should be a reflex of the will of the people . 法律应该是人民意志的反映。
2.
It is very useful to use a miniature reflex camera . 使用小型反光镜照相机很有用。
3.
It is well known that there are reciprocal actions in the simplest reflexes . 大家知道，即使在最简单的反射中也有交互作用。
4.
Tests for blindness include a test for the eye preservation reflex and an obstacle test . 盲视试验包括眼的保护性反射和障碍试验。
5.
Her hand hit my nose and eyes, and tears came in my eyes from the reflex . 她的手打在我鼻子和眼睛上，反应之下我的泪水立刻涌上眼来。
6.
Adequate doses of atropine can abolish many types of reflex vagal cardiac slowing or asystole . 适当剂量的阿托品能消除多种类型的迷走反射性心效减慢或停搏。
7.
Individuals not only react upon one another in this reflex way, but they inevitably communicate their sentiments, attitudes, and organic excitements . 个人之间不仅依靠这种反射方式互相作用，他们还必然要互相交流情感、态度、以及机体的冲动。
8.
The plate shall be made of reflex - reflecting material 该字牌样本如下图所示：
9.
You ' ll need fast reflexes to beat the clock 你需要快速的反应能力来尽快完成关卡。
10.
These are situations which require lightning reflexes 这些情况下需要闪电般的反应
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