英和和英

an average

about average

take an average

the weighted average

a weighted average

average tare

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

to take the average―strike an average

average stature

It is just up to par.

to keep the equilibrium―keep the equipoise

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

work out an average

the mean value

the average score

below (the) average

below the average marks

articles of medium quality―medium goods―middlings

articles of medium quality

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

the balance of power

to an intermediate degree

a medium

the state of being that is average

one's batting average

relatively

equally

comparatively

a lasing medium