The sympathetic nervous system prepares the body for sudden stress, like if you see a robbery taking place.

交感神经系统保证应激状态下的生理需要，比如目睹一场抢劫案时。

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Often these relationships are clearer under conditions of dramatic change, as in the change from colonial to post-colonial cities, or in the reaction of urban society to sudden stress.

通常这些关系在一些戏剧性改变的条件下十分清楚，如从殖民到后殖民城市的改变，或者都会型社会对突来压力的反应。

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This sudden change in mood will help you feel better and release stress.

情绪上的这种突然变化能帮助你感觉好一点，并释放压力。

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Eric Calais,a geophysicist, says that sudden movement can follow a buildup of stress as adjacent plates struggle to move past each other.

VOA: standard.2010.01.13

Even if our basic theory is that economy is elastic in response to nominal stress and plastic in response to real stress, a sudden change in rigidity combined with a large nominal shock could cause a very large plastic deformation in the economy.

FORBES: NGDP in the Long Run and Economic Plasticity

Landry and Kling told me they pride themselves on their resiliency, crediting their ability to turn on a dime in adjusting to business issues, and the strength of their personal partnership in dealing with the inevitable personal stress points from weddings to sudden illnesses and beyond.

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Taking the stress-strain analogy seriously these sudden rigidity changes should cause the economy to be less elastic under nominal shocks, which means that some parts of the economy will never completely recover from the monetary shock.

FORBES: NGDP in the Long Run and Economic Plasticity