背弃

renounce

abandon

desert

go back on

renegade

turn one's back on

jump ship

back-pedal

cross up

背弃[bèiqì]

-abandon;betray;desert;renounce:
abandonone'soriginalstand;背弃原来的立场
gobackonone'sword;背弃自己的诺言

我不能因为他贫病交迫而背弃他。
I can't just turn my back on him now that he's ill and poor.

他再次背弃了他的同志们。
Once again he went back on his comrades.

内阁正在背弃它竞选时的诺言。
The Government are back-pedalling on their election promises.