de·bil·i·ty
noun/dɪˈbɪləti/
/dɪˈbɪləti/
[uncountable, countable] (plural debilities)
(formal)- physical weakness, especially as a result of illness
（尤指疾病引起的）体弱，虚弱，衰弱 - chronic muscle debility
慢性肌肉无力
Word Originlate Middle English: from Old French debilite, from Latin debilitas, from debilis ‘weak’. - chronic muscle debility