1.
VERB
失信于；辜负 If you betray someone who loves or trusts you, your actions hurt and disappoint them.
-
When I tell someone I will not betray his confidence I keep my word...
如果我告诉某人我不会辜负他的信任，我就会恪守诺言。
-
The President betrayed them when he went back on his promise not to raise taxes.
总统背叛了他们，违背了不加税的诺言。
betrayer
-
She was her friend and now calls her a betrayer.
她曾经是她的朋友，现在却叫她叛徒。
2.
VERB
背叛；出卖 If someone betrays their country or their friends, they give information to an enemy, putting their country's security or their friends' safety at risk.
-
They offered me money if I would betray my associates...
他们提出来只要我供出同伙就给我钱。
-
The group were informers, and they betrayed the plan to the Germans.
这帮人是告密者，他们把计划泄露给了德国人。
betrayer
-
'Traitor!' she screamed. 'Betrayer of England!'
“叛徒！”她尖叫道。“英格兰的叛徒！”
3.
VERB
违背，背弃（理想或原则） If you betray an ideal or your principles, you say or do something which goes against those beliefs.
-
We betray the ideals of our country when we support capital punishment.
如果我们支持死刑，那就背弃了我们立国的理念。
betrayer
-
Babearth regarded the middle classes as the betrayers of the Revolution.
巴博施把中产阶级看作是革命的叛徒。
- Noun
-
1. one who reveals confidential information in return for money
-
2. a person who says one thing and does another
- synonym： double-crosser，double-dealer，two-timer，traitor
