n. a solemn pledge (to oneself or to another or to a deity) to do something or to behave in a certain manner
v. make a vow; promise
v. dedicate to a deity by a vow
n. 誓约, 誓言, 许愿
vi. 起誓, 发誓, 郑重宣言
vt. 立誓, 起誓要, 郑重地宣布
1. She made a vow to always be there for her friends.
她发誓永远支持她的朋友们。
2. He vowed to study harder for his exams.
他发誓要更加努力地学习以应对考试。
3. They exchanged vows during their wedding ceremony.
他们在婚礼仪式上互许誓言。