I've slowed it up to an average ten-year level.

我已经把它放慢到平均十年级的水平。

He works an average of 8 hours a day.

他每天平均工作8小时。

She scored an average of 85 on her exams.

她考试的平均分数是85分。

The app has an average rating of 4.5 stars.

这个应用程序的平均评分是4.5星。

An average adult needs about 2000 kcal per day.

一个普通成年人每天需要大约2000千卡。

An artist's perception is often stronger than that of an average person.

艺术家的感知能力通常比常人更强。

An athlete's creatinine level might be slightly higher than that of an average person.

运动员的肌酐水平可能会略高于普通人。

Freddy was an average student, but not an average person.

弗雷迪是一个普通的学生，但不是一个普通的人。

They could walk at an average speed.

他们可以以平均速度行走。

And I have never known an average man who had both.

我从来没见过一个普通人同时拥有这两种能力。