To forsake one’s old friend
背离老朋友
to forsake family loyalty for righteousness
大义灭亲
abandon one’s original stand
背弃原来的立场
forsake the world
遁世;成为隐士
abandon cherished notions
摒弃原有的观念;撇开成见
forsake one’s former belief
放弃过去的信仰
forsake one’s principles
放弃原则
discard one’s wife and forsake one’s child
抛妻弃子
abandon oneself to sth
沉湎于...
abandon oneself to a vice
耽溺于一种恶习
Forsake one’s former habits
抛弃旧习惯
forsake one’s partner
抛弃配偶