Translation of "oath" - English-Traditional Chinese dictionary

oath

noun [ C ] (PROMISE) 承諾 uk us /əʊθ/ US  /oʊθ/

a promise, especially that you will tell the truth in a law court

(尤指法庭上的)誓言,誓約,宣誓
Medieval knights took an oath of allegiance/loyalty to their lord. 中世紀騎士宣誓效忠於君主。
The witness placed her hand on the Bible and took the oath (= promised to tell the truth). 證人將手放在《聖經》上,起誓要講真話。
be under/on oath

to have formally promised to tell the truth

已宣誓要講真話
The judge reminded the witness that she was under oath. 法官提醒證人她宣過誓要據實作證。

(Translation of “oath noun (PROMISE)” from the Cambridge English-Chinese (Traditional) Dictionary © Cambridge University Press)