vow

vow
noun
  1. a solemn promise
    誓言
    ■(vows)a set of such promises committing one to a prescribed role, calling, or course of action, typically to marriage or a monastic career
    (尤指为婚姻或僧侣生涯立下的)誓约
verb
  1. [reporting verb]solemnly promise to do a specified thing
    宣誓,立誓,发誓
    [with clause]he vowed that his government would not tolerate a repeat of the disorder.
    他郑重宣告他的政府绝对不能容许再次发生混乱。
    [with direct speech]one fan vowed, ‘I'll picket every home game’.
    一个球迷发誓说:“我一定为每一次主场比赛放哨”。
  2. [with obj.](archaic)dedicate to someone or something, especially a deity
    (古)(尤指对神)立誓奉献
    I vowed myself to this enterprise.
    我立誓终身为这事业服务。
语源
  1. Middle English: from Old French vou, from Latin votum (see vote); the verb from Old French vouer
英语宝典
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