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transient 转瞬即逝的

rumination 沉思

身体会因此血脉偾张，交感神经系统处于战备状态，一触即发。

your body therefore ramps up for a fight by triggering the sympathetic nervous system.

It’s hard not to get worked up emotionally when you’re in a tense conversation. After all, a disagreement can feel like a threat. You’re afraid you’re going to have to give up something — your point of view, the way you’re used to doing something, the notion that you’re right, or maybe even power – and your body therefore ramps up for a fight by triggering the sympathetic nervous system.