average detention time of local car for loading or unloading

例句：

1. 1.The temperature is 20 degrees Celsius, which is average for this time of year.
   温度是20摄氏度，这是这个季节的平均温度。
2. 2. The team's performance was average, with only one player scoring a goal.
   球队的表现平平，只有一名球员进球了。
3. 3. The book is an average read, with little to recommend it.
   这本书是一本平庸的书，没有什么值得推荐的。