The two parties hereto shall, 30 days prior to the expiration of the validity term hereof, hold negotiation as to whether to renew this Agreement.

甲乙双方应在本合同期满提前30 天，就是否续订本合同事宜进行协商。

youdao

"The union wanted to use the expiration of the evaluation system to keep ineffective teachers in classrooms, not to mention hold the city hostage in future negotiations, " she said.

WSJ: Deal May Ease Evaluation Plan

"The union wanted to use the expiration of the evaluation system to keep ineffective teaches in classrooms, not to mention hold the city hostage in future negotiations, " Bloomberg spokeswoman Lauren Passalacqua said after the announcement.

WSJ: Deal ensures NY teacher-evaluations don't expire