英和和英

an average

about average

average tare

a weighted average

the weighted average

to take the average―strike an average―find the mean

to take the average―strike an average

take an average

average stature

the mean value

to keep the equilibrium―keep the equipoise

below the average marks

to keep two forces in equilibrium―keep two weights in equipoise―counterbalance the excess―counterpoise the excess

to keep two forces in equilibrium―keep two weights in equipoise

the average score

below (the) average

the deviation from the mean

the balance of power

the nth root of the product of n numbers, called the geometric mean

the average marks

strike an average

work out an average

an average wage

life expectancy

the expectation of life

It averages a little under 50.

They average a little over twelve―twelve and a fraction.

a medium

average life span

an average crop