optimum stopping performance

例句：

1. 1. The optimum temperature for growing crops is around 60°F.
   农作物生长的最适宜温度大约是60华氏度。
2. 2. Optimum performance is achieved when the machine operates at its maximum capacity.
   当机器达到其最大容量时，性能达到最优。
3. 3. The optimum solution to this problem is to reduce the number of variables in the model.
   解决这个问题的最佳方案是减少模型中的变量数量。