Shares rose, on average, by 38%.

　　股值平均上漲了38%。

　　The average life expectancy was 40.

　　平均期望壽命曾是40歲。

　　His IQ is above average.

　　他的智商處于中等偏上。

　　Temperatures have been above average.

　　氣溫一直比平均溫度高。

　　I was just an average sort of student.

　　我只是一個(gè)普通的學(xué)生。