a stab in the back meaning in English

暗害
诽谤, 伤人暗箭

Such a vicious lie could be nothing but a stab in the back .
这样一种恶毒的谎言简直是暗箭伤人。
He ' s tried to work within the system , but there has been a stab in the back
他曾试图在这个团体中工作,却遭受到中伤
I was very hurt when jane made those stupid remarks about me . i had not expected a stab in the back from her
珍妮说了那些关于我的傻话令我很伤心。我没想到她会背后说人坏话。