limiting allowed temperature

例句：

1. 1.The temperature limit is set at 20 degrees Celsius.
   温度限制为20摄氏度。
2. 2.The heat index is a measure of the actual temperature, not just the temperature limit.
   热指数是实际温度的衡量，而不是温度限制。
3. 3. The temperature limit for swimming is 25 degrees Celsius.
   游泳的温度限制为25摄氏度。