https://online2.tingclass.net/lesson/shi0529/0008/8532/p31.mp3
https://image.tingclass.net/statics/js/2012
Grant and I were friends until Grant stabbed me in the back
Grant在我背后說我壞話之前我和grant是好朋友。
stab表示刺,戳。 stab someone in the back表示在某人背后說壞話。這種人也可稱為a backstabber。