英和和英

the mean value

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

take an average

an average

work out an average

strike an average

to keep the equilibrium―keep the equipoise

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

to calculate the average

to determine the average amount or size of a quantity

the action of taking the average of a numerical value

the state of being that is average

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

the average marks

to keep the balance―maintain the equilibrium

It does not come up to par.

the average score

the balance of power

The accounts balance.

the balance of power

the deviation from the mean

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

about average

to counterbalance the excess―counterpoise the inequality

an arithmetical [geometrical] average

average stature

life expectancy

lower than average

the law of averages

the mean temperature