英和和英

not in working order

unable to function

not functioning properly

not performed

fail to function or function improperly

not work normally

go to pieces

It hasn't been enforced.

not enforced

not working properly

a state of inaction

won't execute it

not able to perform its normal function

not practical

devoid of activity

Without enforcement

not in active use

perform too rarely

function not stated on the specification sheet

not capable of being used

the function iterates

The goods do not sell.

The work has not given good results―not borne fruit.

perform a function

implicit function

of a function, to be able to become useless

impaired in function

a specified function

not performing or able to perform its regular function

serving no useful purpose