cancel a contract

例句：

1. 1.The contract was canceled due to a sudden change in plans.
   由于计划突然改变，合同被取消了。
2. 2.The agreement was canceled after the meeting.
   会议后，协议被取消了。
3. 3.The cancellation of the flight will cause significant delays.
   航班取消将导致重大延误。