My teacher, you have been so kind to me, how could I ever betray you?
Cantonese
背叛自己嘅国家
背叛自己嘅國家
bui3 bun6 zi6 gei2 ge3 gwok3 gaa1
to betray one's own country
Examples (Wiktionary)
Mandarin
背叛朝廷
背叛朝廷
bèi pàn cháo tíng
to betray the royal court
Mandarin
但是,狗不如的人间渣滓张成泽背叛党和领袖天大的信任和深恩的栽培,犯下了令人发指的大逆行为。
但是,狗不如的人間渣滓張成澤背叛黨和領袖天大的信任和深恩的栽培,犯下了令人髮指的大逆行為。
dàn shì , gǒu bù rú de rén jiān zhā zǐ zhāng chéng zé bèi pàn dǎng hé lǐng xiù tiān dà de xìn rèn hé shē nēn de zāi péi , fàn xià le lìng rén fà zhǐ de dà nì xíng wéi .
However, despicable human scum Jang Song Thaek, who was worse than a dog, perpetrated thrice-cursed acts of treachery in betrayal of such profound trust and warmest paternal love shown by the party and the leader for him.
Mandarin
社会民主党拥护帝国主义战争背叛无产阶级利益的罪恶的行为
社會民主黨擁護帝國主義戰爭背叛無產階級利益的罪惡的行為
shè huì mín zhǔ dǎng yōng hù dì guó zhǔ yì zhàn zhēng bèi pàn wú chǎn jiē jí lì yì de zuì è de xíng wéi
the criminal acts of the social-democratic parties in supporting the imperialist war and betraying the interests of the proletariat