双方同意

• by mutual consent
• mutual assent

例句

1. 经双方同意，谈判代表避开政治上的分歧而集中讨论军事问题。
   By mutual consent, the negotiators kept off political differences, and concentrated on the military issue.
2. 双方同意削减各自在那个地区的军事力量。
   Both sides have agreed to run down their military presence in the area.
3. 如有偶发的经济事件发生，本代理契约可经双方同意作部分的修改。
   In the event of unforeseen economic developments, parts of the agency contract may be changed by mutual agreement.