treason
/ˈtriːzən/noun
(亦作high treason)［mass noun］
1- the crime of betraying one's country, especially by attempting to kill or overthrow the sovereign or government重叛逆罪, 叛国罪（尤指企图谋杀元首或推翻政府）：
they were convicted of treason.
他们被判叛国罪。
1.1
- the action of betraying someone or something背叛, 不忠, 背信：
doubt is the ultimate treason against faith.
怀疑是对信念的根本背叛。
1.2
petty treason
historical the crime of murdering someone to whom the murderer owed allegiance, such as a master or husband〈史〉轻叛逆罪（杀害原被效忠者, 如仆杀主、妻杀夫等的行为）。
USAGE
Formerly， there were two types of crime to which the term treason was applied: petty treason, the crime of murdering one's master， and high treason, the crime of betraying one's country. The crime of petty treason was abolished in 1828 and in modern use the term high treason is now often simply called treason.
派生词
treasonous
adjective词源
Middle English: from Anglo-Norman French treisoun, from Latin traditio（n-） 'handing over'， from the verb tradere.