For example, the average duration of human life has hardly changed in thousands of years.

例如，人类的平均寿命在几千年里几乎没有改变。

The implanted bone was fused with an average duration of6months.

无一例复发，植骨融合平均6个月。

Length of proceedings. The average duration of cancellation proceedings is.

诉讼期限，申请撤消的平均诉讼期限是。

Average duration of the former group was 4.72 days, that of the later 3.67 days.

口服补液组平均疗程为4.72天，静脉补液加口服补液组平均疗程为3.67天。

The country is suffering its highest average duration of unemployment since at least 1948.

美国正在遭受至少是从1948年以来失业率平均持续最长的时期。