average hourly earningss

例句：

1. 1. The average temperaturein winter is below freezing point.
   冬天的平均气温低于冰点。
2. 2. He works hard toachieve the average level of success.
   他努力工作以实现平均水平的成功。
3. 3. Theaverage income for a doctoris higher than that of alawyer.
   医生的平均收入高于律师。