average relative price

例句：

1. 1. The average temperature in winter is below freezing point.
   冬天的平均温度低于冰点。
2. 2.The average income for a teacher is around $50,000 per year.
   教师的平均年收入约为5万美元。
3. 3. The average height of people in this region is 170 cm.
   该地区人们的平均水平身高为170厘米。