| 单词 | insomnia |
| 释义 | Word Frequency insomnia(ɪnˈsɒmnɪə) noun chronic inability to fall asleep or to enjoy uninterrupted sleep ▶ Related adjective: agrypnoticDerived forms insomnious (inˈsomnious) adjective Word origin C18: from Latin, from insomnis sleepless, from somnus sleep |
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