Intense contraction of facial muscles, such as those used in signifying fear, heightens arousal.
面部肌肉因紧张而收缩会加强这种刺激，如人们感到恐惧时所表现出的肌肉收缩。
Other triggers can include cold air, extreme emotional arousal such as anger or fear, and physical exercise.
其他诱因可能包括冷空气、愤怒或恐惧等极端情绪激发以及体育锻炼。
For most, fear, anxiety, remembering, efforts to avoid reminders, and arousal symptoms, if present, will gradually decrease over time.
多数情况下，恐惧、焦虑、回忆、极力避开唤起创伤的事物，以及种种亢奋行为，都会随着时间消退。
For most survivors, symptoms of fear, anxiety, re-experiencing, urges to avoid, and hyper-arousal, if present, will gradually decrease over time.
对大多数幸存者来说，所出现的恐惧，焦虑，重复体验，力图回避，高度觉醒等反应会随着时间渐渐平复。
For most survivors, symptoms of fear, anxiety, re-experiencing, urges to avoid, and hyper-arousal, if present, will gradually decrease over time.
对大多数幸存者来说，所出现的恐惧，焦虑，重复体验，力图回避，高度觉醒等反应会随着时间渐渐平复。
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