一旦许下诺言就不要想翻悔的英文

once you've given your word don't try to back out

• 一旦:    in a single day; i ...
• 许:    praise
• 下:    below; down; under ...
• 诺言:    promise
• 就:    come near; move to ...
• 不要:    don't
• 想:    think; ponder
• 翻悔:    back out