Doctors are men, who prescribe medicines of which they know little, to cure dise

Doctors are men, who prescribe medicines of which they know little, to cure diseases of which they know less, for men, of whom they know nothing at all. 医生是这样一群人，他们为他们一无所知的人开一些他们所知甚少的药去治疗他们知道得更少的疾病。