fixed service

例句：

1. 1. The team's strategy is fixed and cannot be changed easily.
   团队的策略是固定的，不容易改变。
2. 2. The weather in this region is fixed, with no signs of change.
   这个地区的天气是固定的，没有变化的迹象。
3. 3. The agreement was fixed at a certain price, and there was no room for negotiation.
   协议以一定的价格固定下来，没有谈判的余地。