(degree of) the fact of varying
repetition of a simple melody in a different (and usually more complicated) form
change in structure or form caused by new conditions, environment, etc.;instance of such change
"any variation in his routine was immediately reported"
"an experimental version of the night fighter"
"a variant of the same word"
"an emery wheel is the modern variation of a grindstone"
"the boy is a younger edition of his father"
"he patented a variation on the sandal"
"who is responsible for these variations in taxation?"
Variation in wall thickness..is typical of hollow cast-iron columns.
出自： Alan Johnson
Temporary workers to cope with seasonal variation in demand.