有些虚弱用英语怎么说

虚弱可以用英文表示为 "weak"。
"Weak" 来自古英语 "weac"，意思是软弱、虚弱、衰弱。它在英语中是一个常用的形容词，可以用来形容人的体魄、意志、能力等方面的软弱。
例句：
He was so weak that he couldn't even stand up. (他身体太虚弱，连站起来都做不到。)
The company's financial position is becoming increasingly weak. (公司的财务状况变得越来越虚弱。)
She has a weak spot for chocolate. (她对巧克力很有弱点。)