betrayal
noun [ C or U ] usuk/bɪˈtreɪ.əl/
（被）背叛的行为;（被）出卖的行为
an act of betraying someone or something, or the fact of someone or something being betrayed
This was the first in a series of betrayals. 这是一系列背叛事件中的第一件。
I felt a sense of betrayal when my friends refused to support me. 当朋友们拒绝支持我的时候，我有一种被出卖的感觉。