协议明确规定双方必须在六个月内完成项目。

The agreement ___stipulates that both parties must complete the project within six months.

合同明确规定员工必须在工作时间内穿制服。

The contract ___stipulates that employees must wear uniforms during working hours.

合同规定付款必须在30天内完成。

The contract ___stipulates that payment must be completed within 30 days.