英和和英

an average

a weighted average

the average marks

the mean value

life expectancy

the expectation of life

average tare

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

to take the average―strike an average

intermediate capacity

to keep the equilibrium―keep the equipoise

the balance of power

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

the average score

It averages a little under 50.

the mean temperature

the average rainfall

mean draught

average stature

the weighted average

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

an average wage

strike an average

below the average marks

compute the average of

work out an average

above the average

semiofficial

It does not come up to par.