recoil
单词辨析：
指因不喜欢或害怕某物而突然向后退，常用于 recoil from sb/sth 或recoil at sth 结构中。
She recoiled in horror at the sight of a snake.
她一看见蛇就吓得往后缩。
Why did he recoil from her touch?
为什么她一碰他，他便往后缩？
We shouldn't recoil in the face of difficulty.
遇到困难我们不应该畏缩不前。
She recoiled in horror when she saw the state he was in.
看到他那个样子，她吓得直往后缩。
指因害怕而蜷缩，常后接介词 against/under。
The little boy would cower under the table when there was lightning.
一有闪电，这个小男孩就蜷缩到桌子底下。
His father cowered against the wall.
他父亲蜷缩在墙根儿。
His dog was cowering in a corner.
他的狗蜷缩在角落里。
指由于疼痛、害怕或烦恼而退缩或躲开，常用于 flinch at sth 或 flinch away from sb/sth 结构中。
Separated from his mother for such a long time, the boy flinched away from her when she tried to give him a hug.
由于分开了太长时间，当妈妈想拥抱他时，小男孩退缩着躲开了。
He flinched at the sight of the dog.
他一见到那条狗就往后退。
尤指因恐惧而退缩，通常后接副词 away/back。
The thief shrank back against the wall when he heard the police approaching.
听到警察朝这边走过来，小偷退到墙根儿。
The king's anger made his ministers shrink away from him.
国王大发脾气，大臣们纷纷退避。
She shrank away from his touch.
她往后一缩避开了他的触摸。
相关例句：
By this way, the high-pressure gas thermodynamic features in the counter-recoil mechanism under the action of recoil impulsive and the actual performances of this mechanism were studied.
采用分段处理多变指数的方法研究了火炮后坐冲击作用下，复进机内密闭高压气体在火炮后坐瞬变过程中的热力学特性及复进机的实际工作性能。
Recoil mechanism is the crucial part which controls the backward movement of a gun.
驻退机是反后坐装置中控制火炮后坐规律的关键部件。
The policeman fires again, tensed against the recoil, unleashing round after round at his assailant
警察再次开火，紧抵着反冲机构，不断向袭击他的人射击。
The moment I saw it, I could feel myself recoil.
在看到的那一刻，我能感觉得出自己恶心。
For conservation of momentum, the atom must recoil with a momentum of this magnitude in the opposite direction.
因为动量守恒，原子必然以这样大小的动量向相反方向反冲。
Of or being a weapon that is designed to minimize recoil.
属于或是采用减小后坐力影响之设计的武器。