8小时工作日大约是平均水平。

An 8-hour working day is about the ___average.

这类电影的观众人数低于平均水平。

The audience figures were lower than ___average for this sort of film.

我预计在餐馆吃一顿饭平均花费20美元。

I expect to spend an ___average of $20 for a meal in a restaurant.