collaborationism

/kəˌlæbəˈreɪʃənɪzəm/ 37
the advocacy or practice of collaboration with an enemy.act of cooperating traitorously with an enemy that is occupying your country

noun [专属名词]卖国,通敌

Collaborationism is often used to describe the cooperation of civilians with the Axis Powers during World War II.
“通敌合作”一词常被用来形容二战期间平民与轴心国的合作。

单词造句: