n.神经紧张；情绪不安
Her nervousness bubbled into foolish laughter. 她神经紧张到了极点，以致傻笑起来。
Anxiety combined with nervousness is an uncomfortable emotional state in which one perceives danger, feels powerless and experiences tension in preparation for an expected danger. 神经紧张焦虑症是一种时刻准备对抗危险的精神紧张状态。
