【法】 vinculum matrimonii

婚約的英語翻譯：

affiance; betrothal; contract; engagement; precontract
【法】 betrothal; contract of marriage; engagement to marry; marriage promise
matrimonial vows; precontract; promise of marrage; sponsalia

約束的英語翻譯：

engage oneself to; restrict; bind; hold in; restrain; tie; tutor; wrap
【計】 constraint
【醫(yī)】 bridle; restraint
【經(jīng)】 restraint; restrict