lethargy
昏睡（leth 原意是“ 忘川”，喝了忘川水，一切都忘记）
释义2：
lethargy
/ 5leWEdVi: /
◙ noun1. [mass noun] a lack of energy and enthusiasm• 无精打采，无力 »there was an air of lethargy about him. 他一副没精打采的样子。 »[in sing.] she might have sunk into a lethargy. 她可能陷入了一种缺少活力的状态。 [Medicine] a pathological state of sleepiness or deep unresponsiveness and inactivity• [医] 昏睡，嗜眠【语源】
1. late Middle English: via Old French from late Latin lethargia, from Greek lēthargia, from lēthargos 'forgetful', from the base of lanthanesthai 'forget'
俄语/英语字母转换