1.
A hard life and a weak constitution shortened Robert Burns's life.
艰辛的生活和虚弱的体质缩短了彭斯的生命。
2.
Frailty of bodily constitution or health.
虚弱，纤弱体质或健康上的虚弱
3.
a robust/weak constitution
强壮的[虚弱的]体质
4.
constitutional weakness, robustness, etc
体质的虚弱、 强健等.
5.
The condition or quality of being frail.
虚弱虚弱的状态或性质
6.
His own infirmity was not the result of the English climate.
他的虚弱体质不是英国气候造成的。
7.
His weakened condition would not allow of his being questioned by the police.
他身体虚弱，受不了警方的质询。
8.
Her health is very frail.
她的身体十分虚弱。
9.
having little physical or spiritual strength.
体力或精神上虚弱的。
10.
He is in a weakened condition.
他的身体状况虚弱。
11.
He is pretty much pulled down by his illness.
疾病使他的身体很虚弱。
12.
Lacking physical strength or vigor; weak.
无力的；虚弱的缺乏物质力量或活力的；虚弱的
13.
A bodily ailment or weakness, especially one brought on by old age.
虚弱身体上的疾病或虚弱，尤指老龄带来的
14.
Frail in constitution or health.
体弱的，羸弱的体质或健康娇弱的
15.
A person with a slender, thin, or frail body.
细长型者，瘦弱型人身体细长、瘦弱或虚弱的人
16.
The condition or quality of being weak.
虚弱虚弱的状态或状况
17.
Lacking physical or emotional strength; delicate.
虚弱的，脆弱的缺乏体力或情感力量的；易受伤的
18.
Virtual Adepts: Broad possibilities... the spirit is willing, but the flesh is flaccid.
虚无党：宽广的前景……敏捷的精神，虚弱的肉体。