名詞 infirmity:

1. the state of being weak in health or body (especially from old age)
   同義詞：frailty, debility, feebleness, frailness, valetudinarianism

1. Free from infirmity or illness; sound.
   健壯的沒(méi)有衰弱和疾病現(xiàn)象的; 健康的
2. Infirmity often comes with old age.
   虛弱常隨年老而來(lái)。
3. Having a bad temper is his worst infirmity.
   壞脾氣是他最大的弱點(diǎn)。

in.fir.mi.ty

n.（名詞）
【復(fù)數(shù)】 in.fir.mi.ties
A bodily ailment or weakness, especially one brought on by old age.
虛弱：身體上的疾病或虛弱，尤指老齡帶來(lái)的
Frailty; feebleness.
體弱；虛弱
A condition or disease producing weakness.
疾病：導(dǎo)致虛弱的狀況或疾病
A failing or defect in a person`s character.
缺點(diǎn)，弱點(diǎn)：人的意志品質(zhì)中的缺陷或薄弱之處