1. 背叛(信仰)者;背信棄義者 If you call someone a traitor, you mean that they have betrayed beliefs that they used to hold, or that their friends hold, by their words or actions.
e.g. Some say he's a traitor to the working class. 一些人說(shuō)他是工人階級的叛徒。
2. (尤指戰時(shí)的)賣(mài)國賊，叛徒 If someone is a traitor, they betray their country or a group of which they are a member by helping its enemies, especially during time of war.
traitor的翻譯
e.g. ...rumours that there were traitors among us who were sending messages to the enemy. 關(guān)于我們中間有叛徒向敵人通風(fēng)報信的傳言