1.
She looks after her invalid mother.
她照看病弱的母亲。
2.
To incapacitate physically.
使病弱使体质上无力
3.
The invalid lay propped on the pillows.
那病弱者倚靠在枕头上.
4.
a chronic alcoholic, invalid, etc
长期酗酒的、 病弱的等.
5.
To make(bacteria or viruses) less virulent.
使病毒减弱减弱（细菌或真菌）的毒性
6.
She is still weak after her long illness.
久病之后她仍很虚弱。
7.
She is feeble from sickness.
她因为生病而变得虚弱。
8.
The illness has considerably weakened him.
疾病使他变得相当虚弱。
9.
Illness had rendered him rather weak.
疾病使得他相当虚弱了。
10.
He's still in poor health after his illness.
他病后身体仍很虚弱。
11.
He felt weak after illness.
病愈后他感到虚弱。
12.
our invalid mother
我们体弱多病的母亲
13.
a long, enervating illness
长期而使人衰弱的病.
14.
a case of steroid-induced weakness.
促发类固醇虚弱的病例。
15.
"No, dad. You're too weak. You're ill."
“不，爸爸，你身体弱，有病!
16.
He looked weak and sickly.
他看上去虚弱有病态.
17.
He was emaciated by long illness.
他由于长期生病而瘦弱。
18.
A long illness had emaciated the invalid.
长期卧床使病人瘦弱。