average stage

例句：

1. 1. The average temperature in the city is around 20 degrees Celsius.
   这个城市的平均温度大约是20摄氏度。
2. 2.He works hard but his grades are just average.
   他努力学习，但成绩只是普通。
3. 3. The team's performance was average, but they improved significantly after the game.
   球队的表现平平，但在赛后有显著提高。