0 done when needed rather than planned in advance -- đối phó
an ad hoc arrangement.
Unfortunately, determining what is a 'standard' feature or a 'nonstandard' design element is an ad hoc and subjective exercise.
Hence, these tools do not appear to have been fashioned ad hoc from materials which happened to be at hand.
When read by itself, this weaker statement appears awkward and ad hoc.
The limitations imposed involve a large degree of arbitrariness, and the proposal contains ad hoc additions such as productances.
The passage from social salience to sufficiently close (on the basis of reason) is ad hoc.
These were based on their own information needs experiences on projects, traditionally performed manually or using ad hoc search facilities.
More generally, one tries to represent context in an ad hoc way, not to model it.
A number of ad hoc groups made up of individual firms were established.
