unilaterally tear up a treaty

例句：

1. 1. The company announced it would tear up the old contracts and start anew.
   公司宣布将撕毁旧合同，重新开始。
2. 2. The children were so excited that they tore up the paper with their hands.
   孩子们非常兴奋，用手撕掉了那张纸。
3. 3.After the meeting, the team members teared up the notes and started working on the project.
   会议结束后，团队成员撕掉了笔记，开始着手项目工作。