fixed hour

例句：

1. 1. The team's strategy is fixed and cannot be changed.
   团队的策略是固定的，不能改变。
2. 2. The weather forecast says the temperature will be fixed tomorrow.
   天气预报说明天的温度会保持不变。
3. 3. The agreement is fixed, so there is no room for negotiation.
   协议已经确定，没有谈判的余地。