“虚弱地”的英语可以翻译为：infirmly，on the lift，weakly ...

她虚弱地低声说了几句便昏倒了.She whispered a few words weakly before she fell down.劳拉虚弱地靠在门上.Laura leaned weakly against the door.她们在慢慢康复,但仍然消瘦而虚弱地躺在床上.They were convalescing slowly and lay scrawny and weak in their bed....