to promise solemnly, often in a formal way
郑重承诺，通常以正式方式进行 (zhèngzhòng chéngnuò, tōngcháng yǐ zhèngshì fāngshì jìnxíng)
"He swore an oath to serve his country faithfully."
"他发誓要忠实地为他的国家服务。" (Tā **fāshì** yào zhōngshí de wèi tā de guójiā fúwù)
feeling very worried or tense because of problems
to keep one's plans or ideas secret
By being truthful, you can avoid trouble and feel liberated.
A story or article intended to damage someone's reputation,...
to discuss something thoroughly
To start thinking carefully about something
