| 词汇 | myasthenia gravis | 
| 释义 | myasthenia gravis  noun [ U ]  medical specialized uk/maɪ.əsˌθiː.ni.ə ˈɡrɑː.vɪs/ us/ˌmaɪ.əsˈθiː.ni.ə ˈɡræv.ɪs/  重症肌无力 a chronic disease causing weakness of the muscles of the face, arms, and legs that leads to the eyelids falling down and an unsteady way of walking | 
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