Language Point 35

People are changing careers on average every ten years now, instead of staying in a job for life. (Para. 25)
Meaning: People are changing their professions every ten years usually; they don't remain in one profession throughout their whole lives.
career: n. 1. profession
His career as an artist is not a success.

他的艺术家生涯是不成功的。
She had a twenty-year career as a teacher.

她从事教学工作20年。
2. part of one's life that one spends working

During his career, he wrote more than fifty plays.

他一生中写了50多个剧本。
on average: as the usual rate or estimate
Women are, on average, paid 25 percent less than men.

妇女的薪水平均比男人低25% 。