Play between loosely fitting parts.

【机】齿隙机械松弛而运转不稳。

Snarled line on a fishing reel.

(钓鱼)卷轴上钓线的纠结。

Any strong adverse reaction, as to a political movement.

(对政治运动等的)强烈不利的反应。

A sudden violent backward movement or reaction.

反撞；反弹。

To make or execute a backlash.

造成反撞；引致强烈不利的反应。