be ill in bed 卧病不起；生病卧床；卧病在床

【例句】
It was torture to be ill in bed while everyone was celebrating downstairs.
所有人都在楼下庆祝而自己却卧病在床，这实在令人难受。

She is ill in bed so that we can’t go swimming.
我们不能去游泳因为她卧病在床。