insomnia
noun [ U ] uk/ɪnˈsɒm.ni.ə/ us/ɪnˈsɑːm.ni.ə/
C2 失眠(症)
the condition of being unable to sleep, over a period of time
Holly suffered from insomnia caused by stress at work. 霍莉因为工作压力失眠了好几个月。
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