标准

Practice is the sole criterion of truth.

charge a flat standard rate/fee

quality criterion

standards of behaviour

double/current standard

criterion for judging an official's achievements

industrial standard

international standard of weight

high/low standard

safety standards

lay down/establish a criterion; set/establish a standard

lower/raise the standard

keep up the moral standards

adhere to/maintain a standard

comply with the criteria; be within the mark

set a standard (for)

meet the standard; be up to standard; be up to the mark/par; meet/satisfy/fulfil the criteria

employ a criterion (for); adopt a standard

be below standard; fall short of a/the standard

be below/beneath/under the mark

standard posture

modular component

model/standard contract

standard form

standard pronunciation/spelling

standard costs

standardized product