Post-traumatic stress disorder (PTSD) is also a common cause of recurrent ni g ht m ar e .

创伤后压力心理障碍症（PTSD）同样是引起反复做噩梦的一个普遍原因。

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Illnesses that include fever, such as the flu, can often trigger ni g ht m ar e .

包括例如感冒发烧在内的疾病往往能引起噩梦。

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Ni G Z, Qian X Y. Numerical Simulation of Electromagnetic Field. Beijing: Advanced Education press, 1996.139~170

倪光正，钱秀英．电磁场数值计算．北京：高等教育出版社，1996．139～170。

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