背信: bad faithbreach of faithbreach of trustbreak faith withinfidelitytreason
叛国: betray one's country; turn traitor to one's country; commit treason 短语和例子叛国案 a case of treason; 叛国的言论 a treasonable speech; 叛国分子 traitor to one's country; 叛国罪 high treason; treason felony