無力的英語翻譯：

atony; disability; impotence; inability; incapability; incapacity
lack strength; feel weak
【醫(yī)】 acratia; adynamia; anergia; anergy; asthenia; inertia; languor

延髓的英語翻譯：

medulla
【醫(yī)】 bulbus medullae; bulbus rhachidicus; caudex dorsalis; medulla oblongata
oblongata; spinal bulb

* 英語翻譯：

benumb; lull; anaesthetization; anesthesia; blunt; numbness; palsy; paralysis
slacken one's vigilance
【醫(yī)】 palsy; paralyses; paralysis