1
defection from [group/country]
后接被离开的政党、组织或国家。
There have been several defections from the ruling party.
执政党内已有多人叛离。
背叛；叛离
先理解核心含义，再看它在真实句子里的用法。
背叛；叛离
the act of withdrawing support or help from a person, group, or country to which one has allegiance or responsibility
There have been several defections from the ruling party.
执政党内已有多人叛离。
背叛或变节的行为或事件。
An act or incidence of defecting.
尽管有忠诚或责任,但撤回支持或帮助
withdrawing support or help despite allegiance or responsibility
放弃宗教信仰、政党或事业的状态(通常转向反对的信仰或事业)
the state of having rejected your religious beliefs or your political party or a cause (often in favor of opposing beliefs or causes)
Her sudden defection from the committee surprised everyone.
她突然脱离委员会，让所有人都感到惊讶。
The manager's defection to a competitor was seen as a serious betrayal.
那位经理转投竞争对手，被视为一次严重的背叛。
Several defections have left the group too weak to continue.
几次叛离让这个团体虚弱得无法继续下去。
后接被离开的政党、组织或国家。
There have been several defections from the ruling party.
执政党内已有多人叛离。
后接所加入的一方，常指敌对方或竞争对手。
His defection to the enemy was a heavy blow to the army.
他的投敌对军队是一个沉重的打击。
强调叛离者本人，常与其后的from或to搭配。
The defection of the general changed the course of the war.
这位将军的叛变改变了战争的进程。
Not this
He defection from the party last year.
Use this
He defected from the party last year.
defection 是名词，不能直接作谓语；表示“叛离”的动作应用动词 defect。改成 defected 后句子语法正确。
Not this
His defection of the team surprised everyone.
Use this
His defection from the team surprised everyone.
defection 后接 from 表示“从某个组织或国家叛离”；用 of 会误为所属关系，无法表达离开的对象。
Not this
There were many defection in the government.
Use this
There were many defections in the government.
defection 是可数名词，复数形式为 defections；many 后需用复数，因此要加 -s。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
大规模叛离
The party's leadership was alarmed by the mass defection of young voters.
该党领导层对年轻选民的大规模叛离感到震惊。
政治叛离
His political defection made front-page news.
他的政治叛离登上了头版新闻。
从……叛离
Her defection from the movement was seen as a betrayal.
她脱离该运动被视为一种背叛。
叛逃到……
The general's defection to the rebels changed the course of the war.
将军叛逃到叛军那边改变了战争的进程。
叛离率
The defection rate among party members has increased sharply.
党员中的叛离率急剧上升。
高调叛离（引人注目的叛离）
The high-profile defection of the senator weakened the administration.
参议员的高调叛离削弱了政府。
Use defection naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
defection 可记成 de(离开)+fect(做)：别人都在为同一阵营做事时，你抽身离开，就是“背叛、叛离”。
语域：formal 常见场景：政治、新闻报道、正式写作 该词多用于正式或新闻报道语境，常指离开政党、组织或国家；日常口语中较少使用，更常见的说法是 leave 或 abandon。
这些词从重读元音/ɛ/到词尾的/kʃən/与defection一致，属于真押韵。注意拼写相似的defect /ˈdiːfɛkt/ 或 /dɪˈfɛkt/、deception /dɪˈsɛpʃən/、defecation /ˌdɛfəˈkeɪʃən/发音和词义都不同，不要混淆。
Dictionary facts from ECDICT, WIKTIONARY.