增加这么多人成为劳动力，平均生产率可能将下降。

Add so many people to the workforce and average productivity would probably fall.

youdao

注意，这里面分辨用到了已完工800个劳动单元的实际平均生产率和剩余劳动单元的预计生产率。

Note that this forecast USES the actual average productivity achieved on the first 800 units and USES a forecast of productivity for the remaining work.

youdao

生产率的年平均增长量是4.5%。

The average yearly increment in productivity was 4.5 per cent.

《柯林斯英汉双解大词典》